Nigeria’s educational system faces a linguistic crisis that we have been reluctant to acknowledge. While we obsess over pedagogy, teacher training, and curriculum reform, our students continue to fail JAMB examinations and struggle with STEM subjects at alarming rates.
The uncomfortable truth is this: we are teaching our children in a language that undermines their cognitive potential while simultaneously allowing their mother tongues to wither away. This linguistic dysfunction may be the missing piece in understanding why our brilliant, tech-savvy students cannot translate their capabilities into academic achievement.
The statistics paint a grim picture. Year after year, JAMB results reveal persistent poor performance, particularly in science, technology, engineering, and mathematics — the very disciplines Nigeria needs to drive development and compete globally. Conventional wisdom has led us down familiar paths: we blame inadequate teaching methods, outdated curricula, and insufficient resources. While these factors certainly matter, massive curriculum overhauls and pedagogical reforms have failed to produce the dramatic improvements we desperately need.
Something fundamental is being overlooked in our analysis: the profound impact of language on learning. We treat language as merely a vehicle for instruction, forgetting that it is the very foundation upon which all learning is built.
In Nigeria’s educational system, English serves as the medium of instruction while indigenous languages are relegated to the margins, creating a perfect storm of linguistic confusion that handicaps our students from their earliest school days.
Teachers consistently report that students seem disengaged and reluctant to explore content deeply. We often attribute this to generational changes — labelling them as digital natives more interested in multimedia than traditional learning.
However, this explanation conveniently sidesteps some conflicting realities: Nigerian students are extremely brilliant and tech-savvy. However, while many of them do not exert themselves intellectually, others are not curious enough or interested in exploring content in whatever forms they exist. They come into the university environment either spoon-fed, force-fed or overfed information without developing the linguistic tools necessary for independent intellectual exploration.
This box of opposing realities cannot be due to the teaching, curriculum or content only. The correlation between declining English proficiency and poor academic achievement cannot be ignored.
But more critically, we must examine how the systematic erosion of indigenous language competence compounds this problem. When students lack proficiency in both their mother tongue and the language of instruction, they exist in a linguistic limbo that severely constrains their cognitive development.
Research consistently demonstrates that children learn most effectively when initially taught in their mother tongue. This is not merely about comfort or cultural preservation — it is about cognitive architecture.
Language shapes how we organise thoughts, process information, and construct meaning. When children are forced to navigate complex STEM concepts in a foreign language before establishing solid linguistic foundations in their native tongue, we are essentially asking them to build skyscrapers on unstable ground.
The mother tongue serves as what experts call a “cognitive dashboard” — the primary interface through which individuals interpret and interact with their environment. Students grounded in their indigenous languages demonstrate superior ability to grasp abstract concepts, engage in creative problem-solving, and transfer knowledge across domains.
Conversely, those operating primarily in a poorly mastered foreign language often struggle with the linguistic demands of complex academic content, regardless of their innate intellectual capabilities.
Consider the irony: in every developed nation that excels in STEM education, scientific and technological advancement occurs primarily through the medium of the native language.
Yet in Nigeria, we persist with a colonial model that treats indigenous languages as obstacles rather than assets.
The recently introduced National Language Policy offers a transformative opportunity to address this linguistic dysfunction. Unlike previous policies that viewed indigenous languages merely as cultural artefacts to be preserved, this framework positions them as strategic tools for national development. The policy’s provision for mother tongue instruction at pre-basic and basic education levels represents a fundamental shift toward educational effectiveness.
This is not about abandoning English or retreating into linguistic isolation. Rather, it is about creating a strong indigenous language foundation that actually enhances students’ ability to master English and excel in all academic subjects, including STEM disciplines. Students who develop sophisticated thinking skills in their mother tongue are better equipped to transfer these capabilities to other languages and domains.
The implementation of mother tongue education at foundational levels could dramatically improve educational outcomes. When students can initially engage with mathematical concepts, scientific principles, and analytical thinking in languages that provide them full cognitive access, they develop deeper understanding and stronger problem-solving capabilities.
Nigeria’s linguistic diversity, long viewed as a challenge, should be reimagined as a competitive advantage.
Countries that have successfully leveraged multilingual education — from Singapore to South Africa — demonstrate that linguistic diversity can accelerate rather than hinder educational achievement.
The solution to Nigeria’s JAMB and STEM crisis may not lie in more sophisticated teaching methods or expensive educational technology. Instead, it may require the courage to fundamentally restructure how we approach language in education, recognising that giving students cognitive access through their mother tongues is not a step backward, but a leap toward educational excellence and national development.
