Why Your Child Is Taught in Mother Tongue in Grade 1 — And Why That's Actually Smart
Among all the changes the CBC introduced, the one that sparks the most alarm at school gates is this: in Grades 1 to 3, children are taught core subjects using their mother tongue or the dominant language of the school's catchment area. Many parents hear this and worry their child will fall behind in English. The research tells a different, more reassuring story.
Walk into any estate parents' WhatsApp group and you will find this question surfacing every few weeks: "My child is in Grade 1 at [school name] and the teacher is teaching in Kikuyu/Luo/Kamba. Won't this put them behind in English? I thought we were supposed to be preparing them for a global world?" It is a fair concern. And it comes from a place of genuine love and ambition for their children.
But the premise — that early mother tongue instruction delays English acquisition — is not supported by the evidence. In fact, decades of cognitive science and linguistics research point in the opposite direction. Teaching a child to read and reason in their first language does not slow English learning. It accelerates it.
What the CBC Policy Actually Says
The CBC specifies that in Grades 1, 2, and 3 — lower primary — the language of instruction should be the mother tongue or the dominant community language in the area where the school is located. In multilingual urban areas where no single mother tongue dominates, schools are permitted to use Kiswahili as the bridge language.
English and Kiswahili are taught as distinct subjects from Grade 1 onwards — children are explicitly learning these languages. But the language used to teach mathematics, environmental activities, and creative arts in the early years is the one the child already knows best.
From Grade 4 upwards, English becomes the primary medium of instruction across all subjects — and Kiswahili continues as a core subject throughout all grades.
| Grade Level | Language of Instruction | English / Kiswahili status |
|---|---|---|
| PP1 – PP2 | Mother tongue / dominant community language | Introduced as activities and songs |
| Grade 1 – 3 | Mother tongue / dominant community language | Taught as separate, structured subjects |
| Grade 4 – 6 | English (primary medium) | English is now the teaching language; Kiswahili taught as subject |
| Grade 7 – 12 | English | English medium throughout; Kiswahili remains a core subject |
The Cognitive Science Behind the Decision
The CBC's language policy is not a political gesture or a cultural sentiment — though those are valid considerations too. It is grounded in more than fifty years of cognitive and linguistic research. Here is what the science says, in plain terms.
Conceptual transfer
A child who fully understands "what a fraction is" in Dholuo can transfer that concept to English with relatively little effort. What is hard to transfer is a concept that was never fully understood in the first place — because it was taught in a language the child was still learning.
Literacy skills transfer
Reading is not learned twice. The phonological awareness, decoding skills, and comprehension strategies a child develops in their first language transfer directly to reading in a second language. A strong early reader in Kikuyu becomes a stronger English reader — faster — than a child who struggled through English instruction from day one.
Cognitive load reduction
A six-year-old learning mathematics in a language they do not yet speak fluently must use significant mental resources just to decode the language — leaving fewer resources for the mathematics itself. Teaching in the mother tongue frees the brain to focus on the concept being learned, not the medium.
What UNESCO, UNICEF and decades of research confirm:
Children who receive initial literacy instruction in their first language consistently outperform children taught exclusively in a second language — both in that second language and in academic subjects overall. This finding has been replicated across sub-Saharan Africa, South Asia, and Latin America. Kenya's CBC is implementing an approach with strong international evidential support.
"But Won't My Child Fall Behind in English?"
This is the question at the heart of every parent's concern. Let us answer it directly: no, and here is why.
English is taught as a structured subject from Grade 1 — listening activities, phonics, vocabulary building, simple reading and writing. By Grade 3, children are reading simple English texts. The transition to full English-medium instruction in Grade 4 is deliberate and timed precisely because research shows this is when children have the foundational literacy and conceptual base to handle it.
Children in mother tongue programs learn English just as well — often better
Studies comparing children who received early education in their first language versus English-only from day one consistently find that by Grade 4–5, the mother tongue group performs at least as well in English — and significantly better in mathematics and science. The early gap in English "fluency" (often just code-switching speed) closes quickly and is not educationally significant.
English exposure does not stop at the classroom door
Most Kenyan children in 2026 are growing up with significant English exposure outside of school — television, music, social media, and everyday signage. The idea that three years of mother tongue instruction creates an "English gap" ignores the reality of how much English your child is absorbing in the environment around them, every single day.
Weak mother tongue literacy is the actual risk
Under 8-4-4, many children emerged from primary school functionally semi-literate in both English and their mother tongue — they could speak in class but could not read or write with confidence in any language. The root cause was often that foundational literacy was never solidly established because the teaching language was one the child did not yet speak well. CBC addresses this root cause directly.
What You Should Actually Do at Home During Grades 1–3
Understanding the policy is one thing. Knowing how to support it at home is another. Here is a practical framework for parents of lower primary children.
- Speak your mother tongue at home — confidently. Do not switch to English in an attempt to "help" your child. The research is unambiguous: a rich, complex, deeply spoken mother tongue at home is the single most effective thing a parent can do for their child's early literacy. Use it fully. Tell stories, argue, explain, and laugh in it.
- Read to them in whatever language you are most fluent in. A parent who reads aloud in confident, expressive Kiswahili does more for their child's literacy than one who haltingly reads English they are not comfortable with. The love of stories transcends the language they are told in.
- Expose them to English through enjoyment. English children's programmes, songs, audiobooks, and games — especially digital ones — provide natural, low-pressure English exposure that complements classroom learning without forcing it. The key word is "enjoyment." A child who associates English with fun has a massive advantage over one who associates it with pressure.
- Do not panic about the switch to English in Grade 4. The transition is supported by the curriculum and expected by teachers. Most children make it smoothly, especially those with strong literacy foundations from Grades 1–3. The children who struggle most at this transition are typically those who were never fully literate in any language — not those who were taught solidly in their mother tongue.
- Use Kusoma for English reinforcement. CBC-aligned digital learning in English — games, quizzes, animated stories — gives your child structured, curriculum-linked English practice in a format that does not feel like homework. Even 15 minutes a day from Grade 1 builds vocabulary and phonics awareness that makes the Grade 4 transition seamless.
The one thing to avoid
Do not pressure a Grade 1 child to only speak English at home "for practice." Children acquire languages best in a rich, communicatively natural environment — not a pressured, artificial one. Forcing English at home when the child is not yet confident in it can create anxiety around the language, which is the opposite of what you want. Trust the process. The curriculum is designed by people who understand how children learn languages.
The Bigger Picture: Bilingualism Is a Cognitive Asset
There is a broader conversation that rarely happens in Kenyan school gate discussions, and it is worth having. Bilingualism — and especially multilingualism — is not a compromise or a consolation prize. It is one of the most well-documented cognitive advantages a person can have.
Children who grow up fluent in two or more languages demonstrate measurably stronger executive function — the cognitive system governing attention, problem-solving, and switching between tasks. They are better at filtering irrelevant information, holding multiple ideas in mind simultaneously, and adapting to new cognitive demands. These are exactly the competencies the CBC is trying to build across all subjects.
A child who leaves Grade 3 solidly literate in their mother tongue AND in Kiswahili AND with growing English proficiency is not behind. They have a three-language cognitive foundation that most children in the world do not. That is not a problem. That is an extraordinary asset.
Cognitive advantages of bilingualism
- Stronger working memory capacity
- Better ability to focus under distraction
- Greater metalinguistic awareness
- More flexible problem-solving approaches
- Easier acquisition of additional languages later
What Kenya's multilingual children have
- Mother tongue (home language and identity)
- Kiswahili (national language and regional trade)
- English (global academic and commercial language)
- Cultural fluency across Kenya's diverse communities
- Cognitive flexibility that monolingual peers lack
Trust the Language Your Child Was Born Into
The anxiety about mother tongue instruction in Grade 1 is understandable. It comes from decades of being told that English equals opportunity — and that the earlier a child speaks it, the better their prospects. That belief is not entirely wrong about the value of English. But it is wrong about the timing.
The evidence is clear: building a solid cognitive and linguistic foundation in a language the child knows deeply makes them a better English learner later — not a worse one. The CBC's lower primary language policy is not a concession to sentiment. It is an evidence-based investment in the long-term academic success of every Kenyan child.
So when your Grade 1 child comes home singing a counting song in Kamba, or reads their first short story in Dholuo, do not worry. Celebrate. That confident, joyful, deeply understood learning in the language of their heart is the strongest possible foundation for everything that comes after — including excellent English.