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Medium of instruction

The medium of instruction refers to the language used for oral delivery of lessons, as well as in textbooks and other teaching materials, within formal educational settings such as schools and universities.^[1]^[2] This choice profoundly influences comprehension, cognitive processing, and overall learning efficacy, particularly in multilingual societies where it may diverge from students' primary home languages.^[3] In contemporary global education, English has emerged as a dominant medium of instruction, especially in higher education across non-native contexts, driven by aims of internationalizing curricula and bolstering graduates' competitiveness in knowledge economies.^[4]^[5] Empirical research reveals varied impacts on student outcomes: while proficient users may benefit from exposure to English-medium content without performance deficits, those with inadequate command of the medium often experience diminished academic results due to heightened linguistic barriers impeding content mastery.^[6]^[7]^[8] Policy debates surrounding the medium of instruction frequently center on tensions between fostering early proficiency through mother-tongue-based approaches—which empirical data links to stronger foundational skills—and adopting foreign languages like English for broader access to scientific literature and job markets, as evidenced in contested reforms across regions including Arab states, India, and sub-Saharan Africa.^[9]^[10]^[11] Such choices carry causal implications for equity, with non-proficient instruction risking widened achievement gaps, yet transitional models blending local and global languages show promise in mitigating these effects based on longitudinal studies.^[12]^[13]

Fundamentals

Definition and Scope

The medium of instruction (MOI) denotes the primary language employed by educators to convey curriculum content, facilitate classroom discourse, and conduct assessments in academic subjects excluding dedicated language courses.^[14] This encompasses verbal explanations, instructional materials, and student responses, distinguishing it from incidental language exposure.^[15] Unlike language arts classes focused on linguistic proficiency, MOI prioritizes content delivery, where the chosen language influences comprehension of concepts in disciplines such as mathematics, science, and history.^[16] The scope of MOI extends across educational levels, from early childhood through higher education, and varies by institutional, national, and regional policies.^[17] In monolingual settings, it typically aligns with the dominant societal language; however, in multilingual contexts—prevalent in over 50% of the world's population—it involves trade-offs between students' first language (L1) and a second language (L2), such as a national lingua franca or global language like English.^[1] Policies often mandate shifts from L1 in primary grades to L2 in secondary or tertiary levels, as observed in countries like India (where English or Hindi serves as MOI in 40% of schools by 2020) and sub-Saharan African nations (where colonial languages dominate despite 90% L1-mother tongue speakers).^[7]^[17] MOI decisions shape educational equity and access, particularly in low- and middle-income countries where mismatches between home languages and school MOI contribute to dropout rates exceeding 20% in early grades.^[1] This includes bilingual models blending L1 and L2, immersion programs fully in L2, and transitional approaches phasing out L1, each calibrated to demographic linguistics and resource availability.^[4] Globally, MOI frameworks intersect with internationalization trends, such as English-medium instruction (EMI) in non-Anglophone universities, which expanded to over 10,000 programs by 2023, driven by market demands rather than uniform pedagogical evidence.^[18] Empirical scoping reveals MOI's causal role in foundational literacy, with L1 alignment yielding 1.5 times higher reading gains in initial schooling phases per meta-analyses of 100+ studies.^[17]

Types and Models

Monolingual models of medium of instruction rely on a single language for all classroom content delivery. Native language (L1) monolingual instruction uses students' home language exclusively, facilitating initial comprehension and cognitive access to subjects like mathematics and science, particularly in early grades where L2 proficiency is limited.^[19] This approach predominates in linguistically homogeneous settings or where policy prioritizes L1 maintenance, as in some indigenous language programs in Australia documented since the 1970s.^[17] In contrast, L2 monolingual submersion places non-native speakers directly into majority-language classrooms without systematic L1 support, aiming for rapid assimilation but often resulting in comprehension gaps; examples include early U.S. "sink-or-swim" policies for immigrant children pre-1960s.^[19] Immersion models, a subset of L2-focused instruction, deliver content primarily or entirely in the target language while providing supplementary language support. Early total immersion, as in Canadian French programs starting in 1965, exposes majority-language students (e.g., English speakers) to L2 from kindergarten, with 100% initial instruction in L2 tapering to 50% by upper grades.^[19] Partial or late immersion delays full L2 use, allocating 50% or less to L2 from middle school, as implemented in Finnish-Swedish programs since the 1980s.^[20] These models emphasize content mastery over explicit grammar, differing from ESL pullout, where students receive separate L2 lessons (1-2 hours daily) alongside mainstream L2 submersion.^[19] Bilingual models integrate L1 and L2, classified by goals as subtractive (prioritizing L2 at L1's expense) or additive (sustaining both). Transitional bilingual education, subtractive in nature, initiates instruction in L1 for initial literacy and content (e.g., 70-90% L1 in early years), phasing to English-dominant over 2-6 years until L2 proficiency thresholds are met, as in U.S. federal guidelines under Title VII since 1968 requiring exit after three years (though research indicates 5-7 years needed).^[19]^[21] Early-exit variants limit L1 to reading foundations (1-2 years), while late-exit extends L1 to 40% through grade six for subjects like science.^[21] Maintenance or developmental bilingual models adopt an additive approach, allocating balanced time to L1 and L2 (e.g., 50% each) across grades to foster biliteracy, with L1 used for content areas like history alongside L2 language arts.^[19] These programs, evident in U.S. heritage language initiatives since the 1990s, group students by shared L1 and aim to preserve cultural linguistic capital.^[22] Dual language immersion, an enrichment variant, mixes native L1 and L2 speakers in ratios like 90/10 (favoring partner language initially) or 50/50, alternating languages by subject, day, or year to promote mutual proficiency; two-way dual language specifically balances groups (e.g., 50% English-native, 50% Spanish-native) for peer modeling, as in Texas programs expanding post-2000.^[21]^[23] Content and Language Integrated Learning (CLIL), prevalent in Europe since the 1990s, represents a hybrid model where L2 serves as MOI for non-language subjects (e.g., 20-50% curriculum), integrating explicit language objectives like vocabulary scaffolding; unlike pure immersion, CLIL assesses both content and L2 skills collaboratively.^[20] Bilingual content EMI extends this by splitting subjects between languages (e.g., math in L1, biology in L2), as in South African secondary schools post-1994.^[20] These models vary by implementation: time-split (e.g., half-day L1/L2), subject allocation, or flexible codeswitching, with empirical classifications emphasizing entry age, language allocation, and teacher bilingualism.^[19]

Theoretical Foundations

Linguistic Principles

The linguistic interdependence hypothesis, proposed by Jim Cummins in 1979, posits that proficiency in a first language (L1) provides a foundation for acquiring a second language (L2), with cognitive academic language proficiency (CALP) in the L1 transferring to the L2 under conditions of adequate exposure and motivation.^[24] This principle suggests that using the L1 as the medium of instruction enables learners to develop higher-order thinking skills and abstract conceptual understanding, which can then support L2 academic proficiency rather than requiring de novo construction in the L2.^[25] Empirical support comes from longitudinal studies of biliteracy, where L1 literacy development correlated positively with L2 outcomes in content-based immersion programs, indicating shared underlying cognitive processes across languages.^[26] Complementing interdependence is the threshold hypothesis, which argues that bilingual learners must attain a minimum proficiency threshold in the L1 to avoid subtractive effects—where L2 dominance erodes L1 skills without compensatory L2 gains—and instead achieve additive bilingualism with cognitive advantages.^[27] In medium of instruction contexts, this implies that early exclusive L2 immersion risks crossing below the threshold, hindering overall linguistic development, whereas L1-supported instruction allows threshold attainment before L2 transition.^[24] Evidence from evaluations of the common underlying proficiency model shows that children with stronger L1 foundations exhibit faster L2 academic progress, particularly in reading comprehension, when L1 is integrated into instruction.^[28] Distinctions between basic interpersonal communication skills (BICS) and CALP further inform medium selection, as BICS develops rapidly through immersion (within 1-2 years), but CALP requires 5-7 years or more, especially for minority language speakers.^[25] Using L1 for CALP-heavy subjects reduces cognitive overload, allowing focus on content mastery before full L2 shift, as demonstrated in studies where L1 planning in discussions enhanced syntactic complexity and fluency in subsequent L2 output compared to L2-only planning.^[29] However, transfer is not automatic and depends on typological similarity between languages; distant language pairs show weaker direct transfer, necessitating explicit bridging strategies in instruction.^[30] These principles underscore that medium of instruction should prioritize L1 for foundational cognitive-linguistic scaffolding, transitioning to L2 immersion only after proficiency thresholds are met, supported by causal links from L1 development to enhanced L2 outcomes in controlled educational settings.^[31]

Cognitive and Developmental Theories

Vygotsky's sociocultural theory emphasizes language as a mediating tool in cognitive development, where social interactions within the zone of proximal development (ZPD) enable children to internalize higher mental functions through guided dialogue.^[32] Instruction in the mother tongue facilitates clearer communication and scaffolding, reducing barriers to conceptual mastery and allowing learners to focus on cognitive tasks rather than linguistic decoding.^[33] This approach aligns with Vygotsky's view that cultural tools, including native language, accelerate self-regulation and problem-solving by transitioning egocentric speech to inner thought processes.^[32] Piaget's theory of cognitive stages posits that development progresses through assimilation and accommodation of schemas, with language reflecting and later influencing thought, particularly from the preoperational stage (ages 2-7) onward.^[32] In early education, mother tongue instruction supports this by minimizing cognitive overload from unfamiliar syntax, enabling children to engage concrete operations and symbolic representation without confounding language acquisition with content learning.^[32] Disruptions from non-native mediums can impede schema adaptation, as egocentric speech in the first language aids initial self-expression and logical structuring.^[32] Cummins' linguistic interdependence hypothesis complements these frameworks by distinguishing basic interpersonal communication skills (BICS) from cognitive academic language proficiency (CALP), asserting that CALP in the first language (L1) provides a transferable cognitive foundation for second language (L2) proficiency.^[34] Initial instruction in the mother tongue builds this threshold competence, avoiding cognitive deficits from premature L2 immersion and enabling additive bilingualism with enhanced abstract reasoning.^[34]^[33] Empirical extensions of the hypothesis indicate that L1-mediated education fosters deeper conceptual understanding, as underdeveloped L1 skills correlate with diminished academic outcomes in L2 contexts.^[34]

Empirical Evidence

Academic and Proficiency Outcomes

Empirical studies consistently demonstrate that instruction in a student's mother tongue or primary language yields superior academic outcomes compared to second-language immersion, particularly in foundational subjects like mathematics and science, where conceptual understanding is impeded by linguistic barriers. A study analyzing standardized test scores in multilingual settings found that students examined in a second language experienced an average loss of 9.5% in grade points, equivalent to 0.22 standard deviations, due to reduced comprehension rather than inherent ability deficits.^[6] Similarly, in low- and middle-income countries, initial mother-tongue-based instruction has been linked to higher learning achievements, with children outperforming peers in second-language-only programs by facilitating deeper content mastery before language transitions.^[35]^[36] Proficiency outcomes further support this pattern, as mother-tongue instruction enhances not only subject-specific knowledge but also subsequent acquisition of the second language. Research in India revealed that students receiving mother-tongue education showed marked improvements in English proficiency and overall academic performance, contradicting assumptions that early immersion accelerates bilingualism without costs.^[37] UNESCO analyses of global data indicate that multilingual approaches starting with the mother tongue improve literacy rates and inclusion, reducing dropout risks associated with opaque instruction; in contrast, 40% of the world's population lacks access to education in a familiar language, correlating with persistent proficiency gaps.^[38]^[39] In higher education contexts, English-medium instruction (EMI) outcomes hinge on pre-existing proficiency, with non-native speakers facing diminished content uptake when lectures and materials are in a foreign language, as evidenced by test score analyses showing negative impacts on knowledge retention.^[40] However, for proficient students, EMI correlates positively with academic success, underscoring that language familiarity—rather than the medium itself—drives efficacy, though causal evidence prioritizes foundational L1 exposure to build transferable skills.^[41]^[13] These findings hold across diverse regions, with minority language speakers in monolingual households underperforming without mother-tongue support, highlighting the causal role of linguistic match in proficiency development.^[42]

Cognitive and Long-Term Effects

Studies on immersion programs, where a second language serves as the primary medium of instruction, indicate that even one year of such exposure can produce cognitive advantages akin to those observed in early bilinguals, including improvements in executive function tasks like attention and inhibitory control.^[43] These effects arise from the dual demands of content learning and language management, fostering neural adaptations that enhance cognitive flexibility. A Bayesian meta-analysis of 147 studies confirmed that bilingual children, often resulting from immersion-based instruction, outperform monolinguals on executive function measures—such as inhibition, working memory, and shifting—with extreme evidence (Bayes Factor of 4.08 × 10⁸) favoring the advantage, persisting after accounting for publication bias and sample variations.^[44] In specific cognitive domains, second-language medium of instruction correlates with modest gains in selective aspects of executive function, including cold inhibition and task switching (Hedges' g = 0.27 for switching), though working memory and attention show null or inconsistent benefits after corrections for small-study effects and heterogeneity (I² = 72%).^[45] The length and intensity of immersion exposure positively influence outcomes, with greater daily L2 use linked to stronger working memory performance but no consistent differences in inhibition or shifting.^[46] These findings suggest causal mechanisms rooted in heightened attentional demands and cross-linguistic interference resolution, rather than mere bilingual exposure without instructional context. Long-term effects of early non-native medium of instruction include sustained enhancements in cognitive control and metalinguistic awareness into adulthood, potentially building cognitive reserve through lifelong bilingual practice.^[47] However, prospective longitudinal studies involving over 5,000 participants find no reliable delay in dementia onset attributable to bilingualism induced by such instruction, contradicting retrospective claims of 4-5 year delays confounded by factors like education and healthcare access.^[48] Overall, while short-term cognitive loads from L2 instruction may temporarily hinder processing for low-proficiency learners, the net trajectory favors adaptive gains in problem-solving and neural efficiency, with effects moderated by socioeconomic status and instructional quality.^[45]

Socioeconomic and Integration Impacts

Empirical studies indicate that mother-tongue-based (MTB) instruction in early primary education enhances foundational literacy and numeracy skills, which contribute to improved educational attainment and subsequent labor market outcomes. In South Africa, a policy shift in 1955 extending MTB instruction by two years in primary schools resulted in a 1.5% wage increase for men (p<0.1) and 2.0% for women (p<0.05), primarily through gains in literacy (1-2.6 percentage points) and additional schooling (0.1-0.18 years).^[49] These effects persisted into adulthood, suggesting that stronger cognitive foundations from native-language instruction translate to higher human capital and earnings, though employment probabilities showed no significant change.^[49] Similarly, World Bank analyses link MTB approaches to reduced learning poverty—defined as inability to read proficiently by age 10—which causally supports long-term productivity and GDP growth by enabling better skill acquisition.^[50] However, without transition to the majority or economic lingua franca, prolonged exclusive MTB can limit proficiency in languages dominant in job markets, capping wage premiums associated with such skills (often 10-20% higher earnings for proficient speakers).^[51]^[52] Transitional models—combining early MTB with later immersion in a second language—appear optimal for socioeconomic mobility, as they build initial competencies while fostering access to broader opportunities. Quasi-experimental evidence from multilingual developing contexts shows MTB reduces dropout rates and grade repetition, increasing school completion and employability in formal sectors.^[53] In contrast, early non-native instruction often yields poorer initial learning outcomes, exacerbating inequality for low-socioeconomic groups and hindering intergenerational mobility, as foundational deficits compound over time.^[54] For immigrants, host-language immersion correlates with faster labor market entry and higher participation rates, particularly for educated arrivals, underscoring the economic premium of majority-language dominance.^[55] Regarding integration, the choice of medium of instruction influences social assimilation by shaping language proficiency, which serves as a gateway to intergroup interactions and shared civic participation. Proficiency in the societal majority language predicts stronger employment, residential integration, and reduced social isolation among immigrants, with earlier exposure accelerating these processes.^[56]^[51] Classes with high proportions of non-native speakers exhibit lower social integration for all students, as linguistic barriers impede cohesion and peer relationships, potentially reinforcing ethnic enclaves.^[57] MTB instruction supports cultural identity and reduces alienation in diverse settings, mitigating risks of resentment from forced assimilation, yet exclusive use without majority-language transition can delay broader societal engagement and economic incorporation.^[58] In refugee and immigrant contexts, policies prioritizing host-language mediums enhance labor force integration and social ties, though bilingual approaches may balance this with heritage preservation when foundational skills are not compromised.^[59] Overall, causal evidence favors models that prioritize majority-language acquisition for cohesive integration, as shared linguistic competence underpins trust and cooperation in pluralistic societies.^[60]

Controversies and Debates

Non-Native vs. Native Language Instruction

The debate over non-native versus native language instruction centers on whether non-native speakers, particularly immigrant or minority children, achieve superior academic, linguistic, and cognitive outcomes when taught primarily in their home language (L1 instruction) or immersed in the societal majority language (L2 instruction, such as English in English-dominant contexts). Proponents of L1 instruction argue that it leverages children's existing linguistic competence to facilitate comprehension of content, reduces initial cognitive overload, and supports cultural identity, potentially enabling transfer of skills to L2 via the common underlying proficiency hypothesis.^[61] However, empirical evaluations often reveal implementation challenges, including shortages of qualified L1 teachers and diluted time-on-task for L2 acquisition, which can prolong dependence on native-language support and hinder proficiency in the majority language essential for socioeconomic mobility.^[62] Evidence from policy shifts, such as California's Proposition 227 enacted in 1998, which mandated structured English immersion over bilingual programs, indicates accelerated L2 proficiency and reclassification rates for English learners. Post-implementation data showed English learners' academic achievement gaps narrowing by third grade, with statewide test scores rising faster than pre-1998 trends, attributing gains to intensive L2 exposure that identified long-term English learners earlier for targeted intervention.^[63] ^[64] Long-term analyses confirmed these effects persisted, with immersion cohorts demonstrating higher reading outcomes compared to transitional bilingual models in controlled comparisons, though critics attribute some improvements to concurrent curriculum reforms rather than immersion alone.^[65] ^[66] Meta-analyses of bilingual versus immersion programs yield mixed results, with some finding negligible differences in overall achievement and others slight advantages for L1-heavy approaches in short-term content mastery, yet structured immersion consistently outperforms in L2 proficiency metrics due to greater exposure hours.^[67] ^[68] Early critiques of bilingual education, including U.S. Department of Education reviews from the 1970s-1980s, reported no consistent positive impacts on English learners' outcomes, supporting time-on-task theory that prioritizes L2 immersion for efficient skill acquisition without evidence of cognitive deficits.^[69] Peer-reviewed comparisons in Texas and similar contexts affirm immersion's edge in reading proficiency for limited-English-proficient students, as L1 programs often underperform when L1 resources are scarce or when transfer assumptions fail due to typological dissimilarities between languages.^[70] Cognitively, immersion aligns with critical period findings for L2 attainment, where early, intensive exposure yields near-native proficiency by adolescence without eroding L1 maintenance supported by home environments, countering claims of subtractive effects.^[71] Controversially, while academic sources frequently favor bilingual models—potentially influenced by institutional preferences for multiculturalism—real-world causal evidence from immersion mandates in California, Arizona, and Massachusetts highlights faster academic integration and reduced long-term remedial needs, underscoring causal realism in prioritizing majority-language dominance for practical efficacy over ideological preservation.^[72]^[73]

Bilingualism Promotion vs. Majority Language Immersion

Bilingualism promotion in education typically involves dual-language or two-way immersion models, where instruction occurs in both the student's native minority language and the societal majority language, aiming to foster proficiency in both while supporting academic growth. In contrast, majority language immersion prioritizes near-exclusive use of the dominant language (e.g., English in many Anglophone contexts) to accelerate acquisition for non-native speakers, often at the expense of native language maintenance. This tension arises from causal trade-offs: bilingual approaches seek additive linguistic competence, potentially distributing instructional time and cognitive resources across languages, whereas immersion focuses on rapid mastery of the majority tongue for immediate academic and economic integration. Empirical data from meta-analyses indicate that well-implemented bilingual programs yield comparable or superior long-term academic outcomes, including reading and mathematics proficiency, without delaying majority language development.^[74]^[75] Studies on English learners in the United States, such as those evaluating California's Proposition 227—which mandated structured English immersion over bilingual options in 1998—reveal short-term gains in English proficiency under immersion, with English learners achieving higher standardized test scores in English by second grade compared to transitional bilingual models.^[76] However, long-term analyses show no sustained superiority for immersion; students in strong bilingual programs match or exceed immersion cohorts in English skills by upper elementary grades, while also retaining native language literacy, which correlates with enhanced problem-solving and cultural adaptability.^[77]^[78] Critics of bilingual promotion, including analyses from policy-oriented institutions, argue it risks diluting majority language exposure in resource-constrained settings, potentially hindering socioeconomic mobility where majority fluency is a gatekeeper to higher education and jobs; yet, peer-reviewed evidence counters that such delays occur primarily in low-quality implementations, not inherent to the model.^[79]^[80] Cognitively, bilingual promotion demonstrates advantages over monolingual immersion, with immersion students in a second language showing executive function gains akin to natural bilinguals after just one year, including improved attention control and memory.^[43] Meta-analyses of executive function tasks confirm bilingual children outperform monolinguals, attributing this to adaptive cognitive control from managing dual systems, effects amplified in structured dual immersion rather than subtractive immersion that erodes the native language.^[44]^[81] For socioeconomic impacts, dual-language programs narrow achievement gaps for minority students, boosting graduation rates and college enrollment through biliteracy, which facilitates cross-cultural employment; immersion accelerates initial integration but may limit these by fostering linguistic subtractivity, as evidenced in longitudinal data from Latino students in two-way immersion outperforming English-only peers in economic indicators by adolescence.^[82]^[83] The debate persists due to implementation variances and source biases: academic research, often institutionally inclined toward multicultural preservation, emphasizes bilingual benefits, while pragmatic critiques highlight immersion's efficiency in majority-dominant economies, as in post-Prop 227 California where English test scores rose across groups without bilingual's purported "skyrocketing" myth holding under scrutiny.^[84] Ultimately, causal evidence favors bilingual promotion for holistic outcomes when programs allocate sufficient time (e.g., 50/50 models) and teacher expertise, as pure immersion risks cognitive and integrative deficits absent native language scaffolding.^[85]^[86]

Cultural Preservation vs. Practical Efficacy

The tension between cultural preservation and practical efficacy in medium of instruction policies arises from the competing priorities of safeguarding linguistic heritage and equipping learners for economic and social integration in dominant-language contexts. Native-language instruction is posited to sustain cultural identity by facilitating the transmission of indigenous knowledge, folklore, and values, thereby mitigating alienation and fostering psychological well-being among minority groups. Empirical studies, such as a natural experiment in rural India, demonstrate that mother-tongue policies can boost school enrollment by up to 5 percentage points and correct grade attendance by 10-15 percentage points, attributing these gains to improved comprehension and reduced early dropout risks.^[87] Similarly, UNESCO's advocacy for mother-tongue-based multilingual education highlights its role in enhancing foundational literacy and cultural continuity, drawing on evidence from small-scale programs where initial instruction in familiar languages correlates with higher retention.^[38] However, these benefits often remain confined to local contexts, with limited scalability due to resource constraints like the scarcity of standardized textbooks and trained educators in minority languages.^[88] In contrast, practical efficacy favors majority or global languages—such as English in postcolonial settings—for their instrumental value in accessing scientific literature, international trade, and labor markets, where proficiency yields measurable returns on investment. Cross-country analyses reveal that societies adopting uniform dominant languages experience expanded economic growth through lowered transaction costs in communication and education, with historical cases like post-unification Italy showing literacy-driven productivity surges following language standardization.^[89] In developing economies, English-medium instruction has been linked to superior long-term outcomes; for example, in Ethiopia, shifting to English for non-language subjects improved engagement with global curricula, despite short-term comprehension hurdles, leading to higher employability in sectors reliant on international standards.^[90] A Kenyan study of primary education found no added advantages from mother-tongue instruction in English or Kiswahili proficiency, alongside marginally lower mathematics scores (effect size of -0.1 to -0.2 standard deviations), underscoring how native-language focus may delay mastery of economically critical skills.^[91] Large-scale evidence critiques mother-tongue approaches for their implementation pitfalls, including inconsistent transitions to second languages, which result in persistent gaps in global-language fluency and socioeconomic mobility. In diverse multilingual nations like the Philippines, mother-tongue policies have shown negative impacts on foundational reading in both local and official languages, with learning losses of 0.2-0.4 standard deviations attributed to inadequate bridging to practical languages.^[92] World Bank assessments of sub-Saharan Africa indicate that students in second-language mediums, while facing initial deficits (e.g., 20-30% lower early literacy rates), often outperform peers in mother-tongue systems by secondary levels when resources support immersion, correlating with 10-15% higher wages in urban economies.^[93] This pattern reflects causal realities: cultural preservation, while enriching identity, competes with the verifiable utility of linguistic capital in globalized systems, where dominant-language dominance drives innovation and integration, as evidenced by higher GDP contributions in English-proficient regions of Asia and Africa.^[94] Hybrid models, such as transitional bilingualism—initial mother-tongue foundation followed by majority-language immersion—attempt to reconcile these aims, but outcomes vary by context and investment. In Singapore, where English serves as the primary medium with native languages as subjects, students achieve top PISA rankings alongside cultural maintenance, yielding economic premiums of 20-30% in earnings linked to bilingual proficiency.^[95] Yet, in resource-poor settings, pure preservationist policies risk entrenching disadvantage, as local languages rarely interface with the 80-90% of scientific publications in English, perpetuating knowledge asymmetries.^[90] Policymakers thus face trade-offs, where empirical data prioritizes efficacy for broad prosperity, tempered by targeted preservation efforts to avoid wholesale cultural erosion.^[96]

Historical Development

Pre-Modern and Colonial Eras

In pre-modern civilizations, education typically relied on classical or liturgical languages as the medium of instruction, prioritizing elite transmission of sacred texts, philosophy, and administrative knowledge over vernacular accessibility. In medieval Europe, Latin functioned as the dominant language for teaching, disputation, and scholarly works in cathedral schools, monasteries, and emerging universities from approximately the 6th to 15th centuries, enabling cross-regional intellectual exchange despite vernacular spoken languages.^[97]^[98] Instruction emphasized grammar acquisition through immersion and rote memorization starting around ages 5–7, with texts like Virgil and Cicero serving as core curricula.^[99] Across ancient and medieval Asia, analogous systems prevailed. In India, Sanskrit acted as the primary medium in gurukul residential schools from Vedic times (circa 1500 BCE onward), where pupils orally mastered hymns, epics like the Mahabharata, and treatises on logic and astronomy through guru-shishya (teacher-disciple) recitation, excluding most vernacular Prakrits from formal elite learning.^[100] In imperial China, Classical Chinese—distinct from spoken dialects—dominated education and the keju civil service examinations from the Han dynasty (206 BCE–220 CE), requiring candidates to compose essays in this concise, archaic form drawn from Confucian classics, which persisted until the system's abolition in 1905.^[101] In the medieval Islamic world, Arabic was the obligatory medium for madrasa instruction in religious sciences, jurisprudence (fiqh), and hadith from the 9th century, with curricula centered on Quranic exegesis and grammar to preserve doctrinal purity amid diverse conquered populations.^[102] Colonial expansion from the 15th century onward shifted mediums toward European languages to forge compliant bureaucracies and extract resources, often sidelining indigenous systems. British policy in India culminated in the English Education Act of 1835, which allocated funds exclusively for English-medium instruction in Western sciences and literature, intending to produce "a class of persons Indian in blood and colour, but English in tastes, in opinions, in morals and in intellect" as intermediaries for governance.^[103]^[104] French colonial administrations in sub-Saharan Africa and Indochina enforced French as the exclusive language of learning from primary levels, prohibiting local tongues to centralize authority and limit mass literacy, resulting in persistent low enrollment tied to linguistic barriers post-independence.^[105]^[106] Spanish and Portuguese empires in the Americas similarly mandated their languages in missions and colegios from the 16th century, using them to catechize and administrate indigenous populations while eroding native mediums like Nahuatl or Quechua in formal settings.^[107] These policies prioritized utility for colonial control over cognitive accessibility, yielding hybrid elites but widespread educational exclusion.^[1]

Post-Independence and Globalization Shifts

Following decolonization in the mid-20th century, newly independent nations in Africa and Asia frequently initiated language-in-education policies aimed at promoting indigenous languages as the medium of instruction to foster national identity and reduce colonial legacies, though implementation often proved inconsistent due to resource constraints and political instability. In Ghana, after independence in 1957, the initial policy mandated English-only instruction from primary levels, reflecting continuity with colonial practices for administrative efficiency; this shifted in 1967 under military rule to early mother-tongue use (local language in primary year one), then expanded to a three-year mother-tongue phase by 1970, incorporating selected Ghanaian languages like Akan and Ewe, before fluctuating again with a brief English-only reversion from 2002 to 2007 amid debates over proficiency outcomes.^[108] Similarly, India's 1968 three-language formula, stemming from the Kothari Commission recommendations, prescribed regional languages for primary instruction alongside Hindi and English to balance linguistic diversity and national integration, yet English persisted as the dominant medium in secondary and higher education for its perceived utility in technical fields and elite employment.^[109] These policies typically favored transitional bilingual models—indigenous languages in early primary grades transitioning to official or colonial languages thereafter—prioritizing practicality over full decolonization, as indigenous language materials and trained teachers remained scarce.^[110] Full reversals from colonial languages were exceptional; in most cases, European languages like English and French endured in upper education levels to maintain continuity in curricula, examinations, and international linkages, despite ideological commitments to localization. Hong Kong provides a notable counterexample: following the 1997 handover to China, the government mandated a shift to Chinese (Cantonese) as the medium of instruction in approximately 70% of secondary schools (307 out of subsidized institutions) starting in the 1998-99 academic year, justified by evidence that English-medium teaching hindered comprehension for non-proficient students, though English retained prestige for economic competitiveness, prompting parental pushback and supplementary schemes like the Native-speaking English Teachers program.^[111] Across sub-Saharan Africa, post-independence policies in countries like Kenya and Malawi echoed this pattern, with initial endorsements of African languages in primary education undermined by unequal access, teacher shortages, and socioeconomic premiums tied to colonial languages, resulting in persistent hybrid systems rather than wholesale change.^[112] Political transitions often drove these oscillations, as governments alternated between nationalist rhetoric and pragmatic retention of ex-colonial tongues to avoid disrupting educated elites or global ties. Globalization from the 1980s onward accelerated a counter-shift toward English as the preferred medium of instruction in developing countries, driven by economic integration, knowledge-based industries, and the language's status as a global lingua franca, overriding earlier localization efforts in many contexts. In higher education, English-medium instruction (EMI) programs proliferated rapidly after 2000, with universities in Asia, Africa, and Latin America adopting them to attract international students and enhance employability, as English proficiency correlated with access to multinational jobs and research collaborations.^[113] Parental demand fueled the expansion of private English-medium schools in nations like India and Nigeria, where public systems lagged, reflecting empirical advantages in cognitive transfer for global markets despite criticisms of cultural erosion.^[114] This trend, amplified by digital resources and neoliberal reforms, marked a pragmatic pivot: while post-independence policies emphasized sovereignty through local languages, globalization's causal pressures—trade dependencies and skill mismatches—reinstated English dominance, often widening inequities as EMI favored urban, affluent learners proficient in it from early exposure.^[115]

Regional Policies and Practices

Africa

In sub-Saharan African countries, medium of instruction policies generally mandate the use of a local or national language for the first one to three years of primary education, followed by a transition to a former colonial language such as English, French, or Portuguese for subsequent grades and higher levels.^[106] This approach aims to build foundational literacy in familiar languages before shifting to languages of wider communication, but implementation often falters due to insufficient teaching materials, teacher training, and standardized curricula in local languages, leading to premature or inconsistent switches.^[116] For instance, in Nigeria, the national policy requires instruction in the child's mother tongue or the predominant local language during early primary years to facilitate comprehension, yet surveys indicate widespread non-adherence, with English dominating classrooms from grade one in many urban and even rural settings as of 2024.^[117] In East Africa, practices diverge by country: Tanzania employs Kiswahili as the primary medium through all grades of primary school since the 1960s Arusha Declaration reforms, supplemented by English from secondary level, which has supported higher enrollment but strained transitions to English-medium universities.^[118] Kenya's 2020 Competency-Based Curriculum stipulates mother-tongue instruction up to grade three in over 100 local languages, with English and Kiswahili as co-media thereafter, though resource shortages result in de facto English use earlier in many schools.^[119] South Africa's post-apartheid Constitution recognizes 11 official languages, mandating home-language instruction from grades R-3 (and optionally to grade 6 or 7), but English has become the dominant medium in secondary and tertiary education due to its perceived economic utility and parental preferences, with only about 10% of students continuing in African languages beyond primary by 2023 data.^[120] West and Central African francophone states, such as Senegal and Mali, nominally follow Organisation Internationale de la Francophonie guidelines for local-language primers in early primary, but French prevails as the official medium from grade one or two, contributing to dropout rates exceeding 30% in early grades where home-language proficiency is low.^[121] UNESCO estimates that fewer than 20% of pupils in francophone sub-Saharan Africa receive instruction in a home or familiar language, exacerbating learning gaps, as evidenced by 2022 regional assessments showing proficiency rates below 50% in basic reading by grade three.^[122] In Ethiopia, a federal policy since 1994 supports mother-tongue education in eight major regional languages through primary school, with Amharic and English phased in later, yielding improved retention in rural areas but challenges in multilingual border regions.^[123] North African countries primarily use Modern Standard Arabic as the medium across primary and secondary levels, reflecting post-independence Arabization drives; for example, Morocco's 2002 education charter promotes Arabic from early grades while introducing French for sciences in secondary, though Berber (Tamazight) was officially integrated as a national language in primary curricula starting 2003, reaching full implementation by 2020 amid ongoing debates over dialect standardization.^[124] Across the continent, over half of nations have adopted bilingual or multilingual policies by 2025, yet practical efficacy remains limited by a scarcity of qualified teachers—fewer than 10% trained in local-language pedagogy in many systems—and materials, prompting informal code-switching by educators to bridge comprehension gaps.^[121] Recent UNESCO advocacy emphasizes extending home-language use to at least six primary years to align with cognitive development evidence, but fiscal constraints and elite preferences for global languages hinder shifts.^[122]

Asia and Middle East

In Singapore, the bilingual education policy, formalized in 1966, designates English as the primary medium of instruction across all subjects in public schools to facilitate access to global knowledge and economic opportunities, while requiring students to study their assigned mother tongue—Mandarin for ethnic Chinese, Malay for Malays, or Tamil for Indians—as a second language.^[125] This policy, rooted in post-independence nation-building, has resulted in over 90% English proficiency among youth by 2023, correlating with high PISA scores in reading and science, though it faces critiques for diluting mother tongue fluency among some groups.^[126]^[127] India's approach remains fragmented across 22 official languages, with the National Education Policy 2020 advocating mother tongue or regional language instruction up to grade 5 for cognitive benefits, yet English-medium schools expanded to 29% of enrollment by 2022, driven by parental perceptions of superior employability despite evidence of lower comprehension in early English immersion.^[128]^[129] In states like Bihar and Uttar Pradesh, Hindi dominates primary education, but urban private sectors favor English, exacerbating inequities as rural students lag in national exams like ASER, where only 27% of grade 5 students proficient in regional language reading transitioned effectively by 2022.^[130]^[131] China enforces Mandarin (Putonghua) as the universal medium of instruction from primary levels onward under the 1950s Language Law, updated in 2021, to standardize communication across 56 ethnic groups, with minority regions like Tibet shifting from local languages to Mandarin immersion by 2010, leading to reported declines in native literacy rates to below 50% in some areas by 2020.^[132]^[133] English-medium instruction (EMI) has surged in higher education, comprising 10% of programs by 2023 to boost internationalization, though implementation varies, with student proficiency challenges reducing efficacy in non-elite institutions.^[134]^[135] Across Southeast Asia, EMI adoption in higher education has accelerated post-2010 for ASEAN integration, as in Malaysia where 70% of public university courses use English by 2022 despite Malay primacy in schools, yielding mixed outcomes like improved graduate employability but persistent comprehension gaps among rural cohorts.^[136] In Hong Kong, a 2010 "fine-tuning" policy permits flexible mixing of Cantonese and English in secondary schools, increasing EMI usage to 40% by 2023 amid globalization pressures, though parental surveys indicate preferences for native-medium foundations to avoid diluted subject mastery.^[137] In the Middle East, Arabic—typically Modern Standard Arabic (MSA)—predominates as the medium in primary and secondary public education to preserve cultural and religious heritage, with Gulf Cooperation Council (GCC) countries like Saudi Arabia mandating it in core curricula since the 1950s, where 95% of K-12 instruction remains Arabic-based as of 2022, correlating with high regional literacy gains from 50% to 95% between 1970 and 2020.^[138] English emerges in higher education and elite private schools for vocational alignment, as in Saudi universities where EMI covers 30% of STEM programs by 2023, yet faculty reports highlight de facto Arabic reliance due to student proficiency limits, with only 20% favoring full EMI shifts.^[139]^[140] Israel maintains dual systems: Hebrew as the sole medium in Jewish state schools (serving 75% of students), and Arabic in Arab schools (20% of enrollment), with compulsory second-language exposure—Arabic for Jews from grade 3, Hebrew for Arabs from grade 2—under 1948 laws, though Hebrew proficiency among Arab Israelis hovers at 60% functional levels by 2023, impeding labor market integration.^[141]^[142] Integrated bilingual schools, numbering 10 by 2024, experiment with dual immersion, achieving 80% biliteracy rates but enrolling under 1% of students amid political resistance.^[143] In broader MENA, MSA-Arabic instruction mismatches spoken dialects, contributing to learning poverty above 50% in reading by grade 2 per 2021 World Bank data, prompting pilots in transitional bilingual models in Jordan and UAE.^[144]

Latin America and Caribbean

In Latin America, the predominant medium of instruction in public education systems is Spanish in most countries and Portuguese in Brazil, serving as the official languages inherited from colonial periods and reinforced post-independence to promote national unity and administrative efficiency.^[145] This approach has facilitated widespread literacy in dominant languages, with primary enrollment rates exceeding 95% across the region by 2020, though secondary completion lags at around 70% in many nations due to socioeconomic factors rather than language barriers alone.^[146] Bilingual intercultural education (IBE) programs, targeting indigenous populations who speak over 420 native languages, emerged in the early 20th century and expanded significantly after the 1990s through constitutional reforms recognizing multicultural rights, such as Mexico's 1994 adoption of IBE for approximately 1.5 million indigenous students in primary schools.^[147] ^[148] These IBE initiatives typically employ the indigenous language as the initial medium for early grades, transitioning to Spanish or Portuguese for higher levels to build proficiency in both, aiming to reduce dropout rates among indigenous youth, which historically reached 50-70% in monolingual Spanish settings.^[149] Implementation varies: Bolivia's 2009 constitution mandates Aymara, Quechua, and other languages as co-official, with over 1,000 schools using them as primary instruction by 2015, correlating with improved attendance in rural areas.^[150] In contrast, coverage remains limited in countries like Peru and Guatemala, where only 10-20% of indigenous students access quality IBE due to shortages of trained teachers fluent in native tongues and standardized materials, leading critics to argue that policies prioritize symbolic recognition over practical efficacy.^[151] UNESCO data indicate that without mother-tongue instruction, indigenous learning outcomes lag 20-30% behind non-indigenous peers in reading and math assessments.^[152] In the Caribbean, English serves as the medium of instruction in Anglophone territories like Jamaica, Trinidad and Tobago, and Barbados, where it is the official language despite widespread use of creoles in daily life; schools emphasize Standard English from primary levels to prepare for global opportunities, with French or Spanish as foreign languages introduced early.^[153] In Dutch-speaking Aruba and Curaçao, Dutch remains the formal instructional language in secondary education, though Papiamento dominates primary oral interactions, creating transition challenges evidenced by student attitudes favoring local languages for comprehension. Francophone Haiti uses French alongside Haitian Creole, but resource constraints limit Creole's role, resulting in literacy rates below 60% as of 2020.^[154] Bilingual programs for indigenous or migrant groups, such as Haitian students in the Dominican Republic, are nascent and often English-Spanish focused in private international schools, covering under 5% of enrollment.^[155] Regional policies, influenced by OAS and CARICOM frameworks, promote multilingualism for cultural preservation, yet prioritize official languages for efficacy, with creole integration limited to oral support rather than full instruction to avoid diluting standardized testing proficiency.^[156]

North America

In the United States, federal policy has historically oscillated between bilingual education programs, which use students' native languages alongside English for non-native English speakers, and structured English immersion, which prioritizes rapid English acquisition through intensive exposure. The Bilingual Education Act of 1968, enacted as Title VII of the Elementary and Secondary Education Act, provided funding for bilingual programs targeting language-minority students, marking the first national recognition of such needs following civil rights advocacy.^[157] However, states like California (Proposition 227, 1998), Arizona (Proposition 203, 2000), and Massachusetts (Question 2, 2002) legislated mandatory English immersion for most English learners, limiting bilingual options to waivers for special cases, driven by arguments for faster integration into mainstream classrooms.^[158] Longitudinal studies indicate that bilingual instruction yields stronger long-term academic outcomes in core subjects compared to immersion alone, with English learners in dual-language programs outperforming peers on standardized tests by grades 4–6.^[159]^[160] For Native American languages, assimilationist policies dominated until the 1970s Indian Education Act promoted cultural relevance, but proficiency remains low; a 2024 federal plan commits $16.7 billion over 10 years to revitalization via immersion schools and community programs.^[161] Canada's medium of instruction reflects its official bilingualism policy, enshrined in the Official Languages Act of 1969, which mandates equal status for English and French in federal institutions and supports minority-language education under Section 23 of the Charter of Rights and Freedoms (1982).^[162]^[163] Provinces offer French immersion programs for anglophone students and English instruction in Quebec for francophones, with enrollment in immersion exceeding 400,000 students by 2020, fostering additive bilingualism without native-language subtraction.^[164] All provinces require second-official-language instruction, typically starting in elementary school, though implementation varies; evidence from provincial assessments shows immersion participants achieving near-native proficiency in the target language by secondary levels, correlating with cognitive benefits like enhanced executive function.^[165] Indigenous language policies emphasize revitalization, with territorial models like Nunavut's Inuktitut immersion since 2008, though national data reveal only 15% fluency among youth due to historical residential school suppression.^[166] In Mexico, Spanish serves as the predominant medium of instruction, spoken by over 93% of the population, but the General Education Law (2019) recognizes 68 indigenous languages as national co-equals and requires bilingual intercultural education in regions with significant indigenous populations, integrating native tongues for initial literacy before transitioning to Spanish.^[167]^[168] Approximately 6.1% of Mexicans spoke an indigenous language as primary in 2020, with programs serving 1.5 million students in 364 variants, yet implementation challenges persist, including teacher shortages and materials scarcity, leading to higher dropout rates in indigenous areas (up to 20% above national averages).^[169]^[170] Empirical evaluations of transitional models show improved foundational skills when indigenous languages are used early, aligning with cognitive load theories favoring mother-tongue instruction for comprehension.^[17]

Europe

In most European countries, the official national language serves as the primary medium of instruction in public primary and secondary education to foster national cohesion and academic proficiency. This approach aligns with the principle that immersion in the dominant language enhances cognitive and integrative outcomes, as supported by meta-analyses showing superior long-term language acquisition and subject mastery compared to prolonged native-language maintenance for non-speakers. For instance, in France and Greece, instruction is conducted exclusively in the national language, with no systematic use of minority or migrant languages as mediums beyond optional subjects. Exceptions exist in multilingual states: in Spain's Catalonia region, Catalan is the main medium alongside Spanish, comprising up to 70% of instructional time in primary schools; similarly, Basque and Galician serve as co-official mediums in their autonomous communities. In the United Kingdom, Welsh-medium education is available in Wales, where over 20% of primary pupils receive instruction primarily in Welsh as of 2023. Regional or minority languages receive varying support under the Council of Europe's European Charter for Regional or Minority Languages, ratified by 25 member states, which encourages their use in education to preserve cultural identity without undermining majority language dominance. Policies often limit these to teaching as subjects or partial mediums: in Italy's South Tyrol, German is the primary medium for the German-speaking majority (about 70% of pupils), with Italian as a second language; in Finland, Swedish-medium schools cater to the Swedish-speaking minority, enrolling around 5% of students. Participation rates differ widely—high in devolved regions like Scotland (Gaelic-medium units for 1-2% of pupils) but minimal in centralized systems like Poland, where minority languages like Sorbian are taught only 1-3 hours weekly. Empirical studies indicate these programs maintain heritage proficiency but do not consistently outperform majority immersion in overall academic metrics, with meta-analyses of European bilingual initiatives revealing only small to moderate gains in reading and math for native speakers exposed to foreign languages via content-based methods. For students from migrant backgrounds, who comprise 10-15% of pupils in EU countries like Sweden and Germany, policies emphasize rapid transition to the host language through structured immersion or reception classes, often with temporary mother-tongue support limited to 1-2 years. The Netherlands and Denmark exemplify submersion models, placing newcomers in mainstream classes with language support, yielding higher proficiency rates than sustained bilingualism per cross-national reviews. Evidence from European contexts underscores immersion's causal efficacy: immigrant children in host-language programs achieve native-like fluency faster and exhibit stronger labor market integration in adulthood, contrasting with transitional bilingual models where delayed immersion correlates with persistent achievement gaps. The Council of Europe promotes integrating migrants' home languages plurilingually but prioritizes host-language competence for equity, noting that inadequate proficiency hampers subject learning. In higher education, English has emerged as a prominent medium of instruction (EMI) to boost internationalization and employability, with 24,043 English-taught programs across Europe in 2023/24, a threefold increase from 2013. Northern European nations lead: over 80% of Dutch bachelor's programs and 60% of Finnish ones use EMI, driven by Bologna Process reforms emphasizing mobility. While EMI enhances global access, studies highlight challenges, including reduced content comprehension for non-native speakers unless paired with explicit language support, though overall graduation rates remain comparable to native-medium programs in high-immersion settings like Scandinavia. This shift reflects practical efficacy over cultural preservation, as EMI correlates with higher research output and student inflows, per institutional data.

Oceania and Pacific Islands

In Australia, English serves as the primary medium of instruction across all levels of schooling, with federal and state policies emphasizing its role in national cohesion and economic participation.^[171] Efforts to incorporate Indigenous languages, spoken by fewer than 20% of Aboriginal and Torres Strait Islander students at home, occur through optional programs like the First Nations Languages Education Program, which funds curriculum development and teacher training in over 80 Indigenous languages as of 2023.^[172] ^[171] Bilingual models in remote communities, using traditional languages alongside English in early years, have shown potential to enhance overall literacy when supported by trained educators, countering evidence that English-only instruction correlates with lower proficiency in both languages among Indigenous children.^[173] However, such programs remain limited to specific schools, with national curriculum frameworks prioritizing English-medium delivery and Indigenous languages as subjects rather than core mediums.^[174] New Zealand mandates English as the default medium but supports bilingual education through Māori immersion (kura kaupapa Māori) and partial immersion models, where te reo Māori comprises 50-100% of instruction time. The Te Ahu o te Reo Māori strategy, updated in 2024, aims for one million speakers proficient in basic te reo by 2040, integrating it into English-medium classrooms via daily lessons and curriculum resources. Empirical studies indicate these approaches boost cultural identity and academic outcomes for Māori students when immersion begins early, though enrollment in full Māori-medium schooling hovers below 5% of total students due to resource constraints and parental preferences for English proficiency.^[175] ^[176] Policy critiques highlight persistent gaps in teacher supply and funding, limiting scalability beyond urban areas.^[177] In Pacific Island nations, policies favor vernacular languages in early primary years transitioning to English or official lingua francas, reflecting over 2,000 indigenous tongues amid colonial legacies.^[178] Papua New Guinea's 2013 education reform specifies English as the medium from elementary level onward, phasing out vernacular and Tok Pisin despite initial mother-tongue use in community schools serving 800+ languages; implementation challenges, including teacher shortages, result in de facto Tok Pisin dominance in rural areas.^[179] ^[180] In Fiji, English is the official instructional language from year one, with iTaukei (Fijian) and Standard Hindi as vernacular subjects; policy recommends mother-tongue instruction for the first three years, but surveys show inconsistent adherence, favoring English for assessment and equity across ethnic groups.^[181] ^[182] Vanuatu's 2012 National Language Policy designates English and French as principal mediums in dual-stream schools, permitting Bislama and local vernaculars for foundational literacy, though English/French proficiency drives higher education access. Regional assessments like PILNA reveal that early vernacular use correlates with better foundational skills before English transition, yet English's rising status often overrides local policies for global competitiveness.^[183]^[178]

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The present review examines research evaluating the outcomes of bilingual education for language and literacy levels, academic achievement, and suitability for ...
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Dual Language Immersion Programs and Student Achievement in ...
Feb 26, 2024 · This paper presents evidence of the effects of dual language immersion (DLI) programs on the academic outcomes of students in elementary grades.
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[PDF] The Promise of Bilingual and Dual Immersion Education
Our research shows that EL students in English immersion programs generally have higher English proficiency and standardized academic test scores by second ...
[77]
The Impact of English-Only Instructional Policies on English Learners
Nonetheless, there is now consensus in the literature that students in strong English immersion and strong bilingual programs score about the same in English ...
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[PDF] Politics and the English Language in California: Bilingual Education ...
Both English learners and students who already spoke English im- proved in their test scores, but there was no systematic evidence that the Proposition 227 ...<|separator|>
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Bilingual Education: A Critique - Hoover Institution
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[80]
[PDF] Effects of the Implementation of Proposition 227 on the ... - ERIC
Jan 24, 2006 · ... and then transferred to mainstream English-language classrooms. In ... education policy in California since the passage of Proposition 227.
[81]
Early bilingual immersion school program and cognitive ... - NIH
The purpose of the present study was to determine if the impact of CLIL on EF and academic performances varies depending on the immersion language and the ...
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[PDF] Two-way Bilingual Education and Latino Students - ERIC
Two-way bilingual immersion (TWBI) programs have demonstrated great success in improving Latino English learners' educational outcomes.
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Ensuring Equitable Access to Dual-Language Immersion Programs
May 15, 2023 · Studies have generally found that, for ELs, bilingual programs usually outperform English-only programs, DLI programs outperform other forms of ...<|separator|>
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Proposition 227 and Skyrocketing Test Scores: An Urban Legend ...
It is the “Skyrocket Legend”: As a result of dropping bilingual education, test scores in California “skyrocketed.” This legend has had serious consequences.
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Jul 24, 2023 · This study examines the methodological soundness of eight statistical meta-analyses to provide methodology validation to this convergence conclusion.
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[PDF] Effects of Dual-Language Immersion Programs on Student ... - ERIC
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Does learning in mother tongue matter? Evidence from a natural ...
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[PDF] Issues in mother-tongue based multilingual education - ResearchGate
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Common Tongue: The Impact of Language on Educational Outcomes
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English medium instruction in multilingual contexts: Empirical ...
This paper studies the impact of English medium instruction policies on children's learning outcomes in the context of Ethiopia.
[91]
Impacts on student learning in English, Kiswahili, and mathematics
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The Promise and Perils of Mother Tongue-Based Education
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[PDF] LOUD AND CLEAR: Effective Language of Instruction Policies
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Imperium of the Colonial Tongue? Evidence on Language Policy ...
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[PDF] English as a medium of instruction – a growing global phenomenon
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Oct 17, 2019 · This paper revisits the tension in sociolinguistics between the linguistic capital associated with languages of socioeconomic mobility, and the cultural and ...
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[PDF] Latin as a Language for Special Purposes in Medieval and ... - HAL
Jan 28, 2023 · In both provinces,. Latin was the language of public life, of administration, of education and also, from the 4th century onwards, of the Church ...
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A Short History of Latin Teaching Methods - grammaticus
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Arabic medieval education - Personal Websites - University at Buffalo
Medieval Arabic education focused on the Koran, Hadith, and Muslim jurisprudence, with goals of piety, ethics, aesthetics, and religion. Subjects included ...
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[PDF] The History of English Education in India: A Brief Study - JRSP-ELT
The education was characterized by English ideals, religious neutrality and English was the medium of instruction. The English Education Act was a legislative ...
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Macaulay's Minute on Indian Education
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[PDF] Language Policies in African Education* - Bowdoin College
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(PDF) EDUCATIONAL POLICY IN THE COLONIAL ERA
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What is Three Language Formula? History, Challenges and Facts
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[PDF] Language Education Policy in Developing Nations from ...
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[PDF] Medium of Instruction in Secondary Education in Post-Colonial ...
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[113]
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English medium instruction in emerging contexts - ScienceDirect.com
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Medium of instruction policies and efficacy of educational systems in ...
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[117]
Language of instruction policy in Nigeria: Assessing implementation ...
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Language of instruction in education in Africa: How new questions ...
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The use of home language for instruction should be prioritized in Africa
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[125]
Language policy in Singapore
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English dreams: On language debate and English medium education
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English medium boom risks education and identity | Policy Circle
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[138]
Saudi students' perspective towards language education policy of ...
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The Impact of English as A Medium of Instruction in International ...
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[140]
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Advancing Arabic Language Teaching and Learning—A Path to ...
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(PDF) Language policy and planning latin America - ResearchGate
Jan 24, 2023 · Latin America com- prises more than one hundred linguistic families, including between 420 and 700 indigenous languages.<|separator|>
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[PDF] The State of Education in Latin America and the Caribbean
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Bilingual and Intercultural - Inter-American Development Bank
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[PDF] INTERCULTURAL BILINGUAL EDUCATION IN LATIN AMERICA
Without a doubt, relevant intercultural bilingual education (IBE) for indigenous children and adolescents has significantly evolved over its more than 50 years ...
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Indigenous Bilingual Education in Latin America - ResearchGate
Indigenous bilingual education in Latin America dates back to at least the beginning of the twentieth century. Since then the field has evolved significantly.
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[PDF] the role of intercultural bilingual education in Latin America
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Multilingual education, the bet to preserve indigenous languages and
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How can Latin American and Caribbean indigenous languages be
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Exploration of Bilingual Education in the Dominican Republic and ...
Mar 6, 2024 · Bilingual education in schools describes the teaching of educational material in both the local and a second language.
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Language Education in the Caribbean: Selected Articles by Dennis ...
A collection of fifteen original essays introduced by a short foreword and preface which pay tribute to Craig's important achievements.
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A Chronology of Federal Law and Policy Impacting Language ...
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Encyclopedia of Bilingual Education - English Immersion
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Two-language instruction best for English-language learners ...
Mar 25, 2014 · The results show that while students in English immersion programs perform better in the short term, over the long term students in classrooms ...
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Bilingual Education vs. English-Only: What the Research Says
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Biden-Harris Administration Releases 10-Year National Plan on ...
Dec 9, 2024 · The plan released today calls for a $16.7 billion investment for Native language revitalization programs for federally recognized Tribes and the Native ...
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Jul 14, 2025 · Section 23 seeks to preserve and promote the minority, by granting minority language educational rights to minority language parents throughout Canada.
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French Language Policy in Canada: Overview and Impact
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To what extent are Canadian second language policies evidence ...
All provinces strongly support the learning of the second official language (French in English Canada, and English in Quebec) and they also provide support for ...
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Maintaining and Renewing Indigenous Languages
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Mexico - Ethnologue
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First Nations Languages Education Program
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"Indigenous Languages programmes in Australian schools - A way ...
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Indigenous languages won't survive if kids are learning only English
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Distraction in Australian language education policy: a call to re ...
In recent times, Aboriginal and Torres Strait Islander languages are gaining traction in schools, after being banned in Australia and, in particular, from ...
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Te reo Māori in classrooms: Current policy, future practice
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[PDF] Teacher experiences and perceptions related to - ERIC
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[PDF] The Language Question in Pacific Education - ERIC
While local language policies reflect community interests in additive bilingualism, English continues to increase in status and use across the Pacific. Recently ...
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[PDF] Papua New Guinea education policy
5.2. ENGLISH AS LANGUAGE OF INSTRUCTION. The Language of instruction shall be English replacing vernacular or the lingua franca including Tok Pisin and Hiri.
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Vernacular education in Papua New Guinea - UNESCO Digital Library
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Language education needs for multilingualism in Fiji primary schools
The current education policy states that children be taught in their mother tongue for the first 3 years of primary school before English becomes the medium of ...
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[PDF] Using Standard Hindi and Fiji Hindi in the Primary School ... - ERIC
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Understanding challenges with language of instruction in ...
Sep 8, 2024 · The Pacific Islands Literacy and Numeracy Assessment (PILNA) aims to monitor student achievement in literacy – reading and writing – and ...