In many of Spain’s autonomous communities with co-official languages, an abysmal gap exists between the political rhetoric of "social cohesion" and the daily reality of the public school classroom. The predominantly working-class population speaks Spanish (L1) at home. Their children attend public schools, where a rigid immersion model in the co-official language (L2) is applied.
Meanwhile, the economic, administrative, and political elite—who already use the L2 in their social and professional circles—possess the resources to enroll their children in private or charter schools, or to hire educational tutoring to safeguard their learning. For working-class families without resources, guaranteeing that linguistic support at home is nearly impossible.
The result is a two-track system: one group of children consolidates bilingualism with family and institutional support, while another is thrown into the void of literacy in a language they do not master, without having learned to read in the one they actually speak.
From the perspective of the Simple View of Reading (Hoover & Gough, 1990), Reading Comprehension is the product of Decoding multiplied by Listening Comprehension ($RC = D \times LC$). If a child lacks oral competence in the educational curricular language (L2), their reading comprehension in that language will be non-existent or deficient, no matter how well they manage mechanical decoding.
Before proceeding, a clarification is necessary: nothing stated below questions the value of bilingualism itself—whose cognitive, metalinguistic, and social benefits are thoroughly documented (Bialystok, 2001; Cummins, 2000)—but rather the way it is implemented when the student's native language is ignored and rigid immersion models are applied without the necessary support systems.
This raises uncomfortable yet clinically necessary questions, which research in bilingualism and neuroeducation has been answering clearly for decades:
1. How does a child with L2 language insufficiency operate phonologically when learning to read?
The Evidence: We are facing a scenario far more severe than simple cross-linguistic transfer. These children do not start with a consolidated reading foundation in their native language (L1) that can transfer to the L2. They simultaneously face two massive cognitive tasks:
Learning to read (acquiring the alphabetic principle, applied phonological awareness, and grapheme-phoneme correspondence).
Acquiring a new language (vocabulary, verb morphology, and an unfamiliar phonological system).
The Result: The child’s brain lacks the necessary phonological representations in both languages to tackle literacy. In Spanish (L1), they have not consolidated the phonological route because they were never systematically taught to read in their language. In the L2, they face graphemes whose sounds they cannot associate because they lack the oral lexicon and the phonological system of that language.
It is not that they are applying "the wrong phonological map"; it is that they have no consolidated phonological map from which to operate.
The child attempts to decipher words in a language they do not speak, without having learned to decipher in the language they do master orally. This generates what is documented in literature as simultaneous functional illiteracy in both languages: the child fails to automate decoding in either L1 or L2, remaining trapped in a stage of laborious reading devoid of comprehension in any language.
As Cummins' (1979) Linguistic Interdependence Hypothesis explains, L1 and L2 competencies share a Common Underlying Proficiency (CUP), which allows for the positive transfer of skills between both languages when that foundation is developed. But in this case, the CUP has not been consolidated in L1 because the child never received systematic literacy instruction in their native language. Without that foundation, there is nothing to transfer to L2. The child faces reading acquisition in a vacuum, without the linguistic scaffolding that science considers indispensable.
Clinical Consequence: These children present profiles that can be mistaken for severe dyslexia or learning disabilities, when in reality their difficulty is educational and linguistic: they have been deprived of the opportunity to develop reading competence in the language in which they have oral competence, and are required to read in a language they do not master.
2. What happens to children with L1 language deficits who must learn to read in an L2?
The Evidence: We face a scenario of triple educational vulnerability. These children not only lack a reading foundation in their native language (L1)—as seen in the previous point—but many also present difficulties in oral language development (simple language delays, undiagnosed Developmental Language Disorder [DLD], or severe lexical poverty). Yet, they are required to learn to read in an L2 they do not master.
The combination is explosive:
Deficit in the L1 linguistic base: The child already starts with difficulties in the oral language of their native tongue.
Absence of L1 reading instruction: They were never systematically taught to read in Spanish.
L2 immersion without scaffolding: They are required to decode and comprehend texts in a language where they lack oral competence, vocabulary, and a phonological system.
The Result: The child faces the most complex task that can be posed in an educational setting: learning to read in a language they do not speak, without having learned to read in the language they do master orally, and with pre-existing language difficulties.
This is not a "double ceiling"—that expression falls short. It is a systemic cognitive collapse. Working memory is immediately saturated. Motivation plummets. And what is most serious from a clinical standpoint: these children present profiles that perfectly fit the criteria for severe dyslexia, specific learning disabilities, or even mild intellectual disability.
This leads to what specialized literature documents as the overidentification of learning disabilities in bilingual children evaluated in their non-dominant L2 (Paradis, Genesee & Crago, 2011; Bedore & Peña, 2008): children misdiagnosed with specific learning disorders when their real issue is cumulative educational deprivation. They are assessed using standardized tests in a language they do not master, without considering that they never received systematic reading instruction in their native language.
Clinical Consequence: These children are referred en masse to speech-language pathology, psychopedagogy, and special education services within the public network. They receive diagnoses that will follow them throughout their schooling. Accommodations are applied to their curriculum that fail to address the root of the problem: that they were taught to read in a language they did not speak, without having been taught to read in the language they did master. It is not a problem with the child. It is a problem with the system.
3. How much effort does it take for a child with borderline IQ to learn to read in a language they do not master, without having learned in their native language?
The Evidence: Here, Cognitive Load Theory (Sweller, 1988) comes critically into play. Working memory has a strictly limited capacity to process new information. For a child with borderline IQ (a range of 70–85, according to ICD-11), the cognitive resources available for learning are already reduced and require highly structured and sequenced instructional scaffolding.
The Real-World Scenario: This child does not simply face "reading in L2." They face the task of learning to read from scratch while simultaneously attempting to relate those graphemes to a phonological system, a vocabulary, and grammatical structures (verb conjugations) that are completely unknown to them.
The Result: Extreme cognitive overload occurs. Working memory collapses under the weight of three simultaneous demands that far exceed its processing capacity:
Learning the mechanics of decoding (which they did not learn in L1).
Acquiring the phonological and lexical system of the L2.
Attempting to extract meaning from a text they do not understand orally.
With not a single bit of cognitive "bandwidth" left, reading comprehension is literally impossible. In fact, the child often fails to achieve even fluent mechanical decoding because they lack the phonological representations in L2 to self-correct.
Clinical and Emotional Consequence: The effort is so disproportionate and fruitless that the child quickly develops learned helplessness. Frustration and anxiety skyrocket, leading to an absolute rejection of reading, school, and, in many cases, externalizing behavior problems (to avoid the task) or internalizing ones (apathy, somatization). It is not a problem of the child's cognitive capacity; it is the direct result of a disproportionate school demand that completely ignores their linguistic starting point.
4. What is the economic and social cost of this system?
The Evidence: The cost of this model is measured not just in dollars, but in derailed academic lives. When an educational system decides to teach reading in a language the child does not master, without having previously taught them to read in their native language, it generates a predictable systemic failure.
Studies on the school effectiveness of linguistic minority students (Thomas & Collier, 2002; Ramírez, 1992) consistently demonstrate that these subtractive immersion models produce the poorest long-term academic outcomes. In the context of children without reading literacy in L1 who are submerged directly into L2, the costs multiply:
💔 Social and Emotional Cost
Bilingual functional illiteracy: The child fails to consolidate literacy in either L1 or L2.
Early school failure: The inability to access the written curriculum turns the child into a "non-reader" from the very first grades.
Linguistic and cultural exclusion: The child receives the implicit message that their native language is not valid for "learning important things," generating a generational fracture and linguistic shame.
Deteriorated mental health: Chronic frustration, anxiety, and learned helplessness lead to self-esteem and behavioral issues.
Early school dropout: They swell the statistics of school dropouts, not due to a lack of ability, but because of a system that denied them basic tools.
💰 Economic Cost
Overidentification and mass referral: Thousands of children are referred annually to public speech therapy and special education services with erroneous diagnoses, oversaturating the system.
Ineffective grade retention: Repeating a grade does not fix the lack of reading competence in the language of instruction.
Loss of human capital: Youth without functional reading skills face enormous difficulties accessing qualified training or the labor market.
⚖️ The Cost of Inequity
Perhaps the gravest cost is that of social injustice. This system disproportionately punishes families with the fewest resources. Families with means can pay for private tutoring, purchase materials, or compensate for school deficiencies at home (or simply choose a private school). Families without resources cannot.
The educational system, which should be the great social equalizer, becomes an amplifier of inequalities. Children from disadvantaged families bear the weight of a language policy that denies them the fundamental right to learn to read under cognitively optimal conditions.
5. What studies back the "immersion model" applied to Spanish speakers?
The Evidence: The question is uncomfortable, but the answer is historically inescapable: subtractive immersion models applied to linguistic minorities do not originate in modern pedagogy, but rather in the colonial assimilation policies of the 19th and 20th centuries. When an educational system decides to teach children to read in a language that is not their own, systematically ignoring their oral competence in L1, it is applying—whether it knows it or not—a model documented in contexts of imperial domination.
📜 Documented Colonial Precedents:
British India (Macaulay, 1835/1979): English was imposed as the language of instruction, marginalizing vernacular languages, with the goal of creating "a class of persons, Indian in blood and colour, but English in taste, in opinions, in morals, and in intellect." The result: a disconnected elite and a mass populace plunged into functional illiteracy.
French "Assimilation" Policy in Africa: The language of instruction was exclusively French. The result was massive cultural disconnection and generations of children who mastered neither French nor their own native languages.
Indigenous Residential Schools in North America: Children were torn from their families and forbidden from speaking their languages under physical punishment. The Truth and Reconciliation Commission of Canada (2015) labeled this system a "cultural genocide."
🔬 Theorists Who Have Documented These Parallels:
Robert Phillipson (1992): Coined the term "linguistic imperialism" to describe how power structures are maintained through the imposition of a dominant language.
Tove Skutnabb-Kangas (2013): Developed the concept of "linguicism" or linguicide, arguing that education in a language imposed over the student's L1 constitutes a form of systematic destruction of a language and its associated culture.
James Tollefson (1991): Demonstrated how seemingly neutral educational language policies serve to maintain structures of social inequality.
🔄 The Connection to the Current Case and the Great Hypocrisy of the "Canadian Model":
When an educational system imposes literacy in a co-official language on Spanish-speaking children who do not master it orally, have received no reading instruction in their native language, and come from families without the resources to compensate for it, it is structurally applying the exact same assimilationist logic as Macaulay in India, colonial France in Africa, or the residential school system in historical Canada.
And herein lies the great intellectual fraud perpetrated by the defenders of this system: when they seek international legitimacy, they always cite the famous "Canadian model" of immersion. But they omit a crucial detail. That experiment (St. Lambert, 1972) was an additive bilingualism model designed exclusively for Anglophone children—the dominant social and economic group.
Slapping the name of that model onto Spanish-speaking children in public schools while marginalizing and excluding their native language from the curriculum is not copying modern Canada. It is replicating the logic of its old colonial residential schools and 19th-century assimilation policies: the group holding local political power uses the school system as an instrument to displace the language of the subordinate group. They sell "Canadian immersion" but execute "colonial assimilation."
The result is a population that fully masters neither the imposed language (due to a lack of exposure outside the classroom) nor their native language (due to institutional devaluation). A population linguistically impoverished and academically vulnerable.
⚠️ The Key Difference: The Rhetoric of "Bilingualism"
What makes the current model particularly perverse is that it presents itself under the rhetoric of bilingualism and co-official status. But not all bilingualism is equal:
Additive bilingualism: The L2 is added without displacing the L1.
Subtractive bilingualism: The L2 progressively displaces the L1.
The model applied to Spanish speakers in rigid immersion contexts is, in practice, subtractive bilingualism disguised as additive. Bilingualism is promised, but assimilation is delivered.
Conclusion: Toward an Evidence-Based and Equitable Pedagogy
We are not looking at an innovative pedagogical model. We are looking at the updating of a linguistic domination technology that is more than two centuries old. The difference is that today it is not done in the name of the empire's "civilizing mission," but rather in the name of "social cohesion" or "linguistic normalization." The names change. The power structure does not.
Science is clear: the gateway to literacy must be the language that the child already has structured in their mind. Denying public school children the right to learn to read in their native language, while the elite bypasses the consequences of this model, is not an educational policy. It is a social injustice with a scientific signature. It is time for educational administrations to align their policies with evidence, neuroscience, and, above all, equity.
References
- Bedore, L. M., & Peña, E. D. (2008). Assessment of Bilingual Children for Identification of Language Impairment: Current Findings and Implications for Practice. International Journal of Bilingual Education and Bilingualism, 11(1), 1–29. https://doi.org/10.2167/beb392.0
- Bialystok, E. (2001). Bilingualism in development: Language, literacy, and cognition. Cambridge University Press.
- Cummins, J. (1979). Cognitive/academic language proficiency, linguistic interdependence, the optimum age question and some other matters. Working Papers on Bilingualism, 19, 121–129.
- Cummins, J. (2000). Language, power, and pedagogy: Bilingual children in the crossfire (Vol. 23). Multilingual matters.
- Hoover, W. A., & Gough, P. B. (1990). The simple view of reading. Reading and Writing, 2(2), 127–160. https://doi.org/10.1007/BF00401799
- Lambert, W. E., & Tucker, G. R. (1972). Bilingual education of children: The St. Lambert experiment. Newbury House.
- Macaulay, T. B. M. B. (1979). Speeches: With his minute on Indian education. AMS Press.
- Paradis, J., Genesee, F., & Crago, M. B. (2010). Dual language development and disorders. Baltimore, MD: Brookes Publishing Company.
- Phillipson, R. (1992). Linguistic imperialism. Oxford University Press.
- Ramírez, J. D. (1991). Final report, longitudinal study of structured English immersion strategy, early-exit and late-exit transitional bilingual education programs for language-minority children (Vol. 2). Aguirre International.
- Skutnabb-Kangas, T. (2013). Linguistic genocide in education--or worldwide diversity and human rights? Routledge.
- Sweller, J. (1988). Cognitive load during problem solving: Effects on learning. Cognitive Science, 12(2), 257–285. https://doi.org/10.1207/s15516709cog1202_4
- Thomas, W. P., & Collier, V. P. (2002). A national study of school effectiveness for language minority students' long-term academic achievement. University of California-Santa Cruz, Center for Research on Education, Diversity & Excellence.
- Tollefson, J. W. (1991). Planning language, planning inequality: Language policy in the community. Longman.
- Truth, & Reconciliation Commission of Canada. (2015). Final Report of the Truth and Reconciliation Commission of Canada, Volume One: Summary: Honouring the Truth, Reconciling for the Future. James Lorimer & Company.
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