Here is a strange fact about the English-teaching industry, and once you notice it you can't stop noticing it: the two kinds of people who understand language and learning most deeply — linguists and pedagogy researchers — are almost entirely absent from the schools where their expertise would do the most good. The institutions whose entire purpose is teaching language are, with rare exceptions, run without anyone who studies language or learning for a living.
Imagine discovering that hospitals were mostly run without doctors, or that bridges were mostly built without engineers. You'd want to know two things: what exactly are these missing experts, and why are they missing? This article answers both — because the answer explains a great deal about why language schools so rarely improve.
What is a linguist, actually?
A common misunderstanding first: a linguist is not simply someone who speaks many languages, and not just someone who's "good at" languages. That's a polyglot, which is a different thing.
Linguistics is the scientific study of language itself — how languages are structured, how the sounds work, how meaning is built, how the mind stores and retrieves words, and, crucially for a school, how a second language is actually acquired. A linguist understands the mechanism. They can tell you why learners who memorise word lists freeze in conversation (the words are stored as isolated translation-pairs rather than woven into a network — see What Is the Mental Lexicon), why flooding learners with rich input matters more than drilling rules, and why a technique like recasting fixes errors better than red ink does. They know which teaching methods merely feel rigorous and which ones the evidence says actually work.
What is pedagogical theory, and why does it need experts?
If linguistics is the science of language, pedagogy is the science of teaching and learning — how humans acquire skills and knowledge, and how to structure instruction so that they acquire them faster and more durably.
Pedagogy research is the reason we can say, with evidence rather than opinion, that the teacher is the single biggest factor in language outcomes, that meaning-oriented input beats memorisation, and that multi-modal, playful learning outperforms silent drilling — all findings from the kind of rigorous review (such as the UK Education Endowment Foundation's 2025 Rapid Evidence Assessment into language learning) that a pedagogy expert knows how to read, weigh, and translate into a curriculum.
This is the key point: research is only useful to a school if someone on the inside can interpret it and act on it. A pile of studies changes nothing on its own. It takes an expert to turn "the evidence favours high involvement load" into a specific lesson, a specific game, a specific homework. Without that person, a school is left doing whatever the textbook publisher decided, or whatever everyone has always done.
So why are these experts missing?
If they're so valuable, why are linguists and pedagogy researchers so rarely found in language schools? We can't prove a single cause for every school, and we won't pretend to — but from our own experience building one, here is our honest read. Several forces push in the same direction.
1. The incentives reward marketing, not pedagogy. Most language schools compete on things parents can see and judge quickly: location, price, a polished brochure, a confident sales conversation, the nationality of the teachers. They rarely compete on curriculum quality — and for an uncomfortable reason. Pedagogy is hard for a customer to evaluate. A parent can't easily tell a research-grounded curriculum from a fashionable-sounding one until months or years have passed. When quality is invisible to the buyer, the rational business move is to spend on what is visible — and an expensive linguist quietly improving the curriculum is about as invisible as spending gets.
2. The career paths point elsewhere. Linguists and education researchers are trained in universities, and that's overwhelmingly where they stay — where the prestige, the research funding, and the academic salaries are. Commercial language schools aren't, by default, set up to attract or pay them, and the two worlds rarely talk. The expertise exists; it's just pooled somewhere the schools never recruit from.
3. The babysitting trap — the one we suspect matters most. This is the mechanism we'd most like to see researched properly, because in our experience it's decisive. Curriculum development and research require something most schools never have spare: management bandwidth. And at a school built on underpaid, undersupported, high-turnover teachers, that bandwidth is consumed entirely by firefighting — covering sick-day no-shows, refereeing conflicts, managing discipline, constantly re-hiring and re-training to replace the people who left. Management spends its days policing teaching staff and has nothing left over to develop the teaching. It's a vicious cycle: weak, poorly-treated staff force management into babysitting, babysitting crowds out development, no development means the curriculum never improves, mediocre outcomes keep the school competing on price, and competing on price means it can never afford to pay for better staff or real experts. Round and round.
4. There's no data to work with. Even a willing researcher needs something to research. Most language schools don't systematically track learning outcomes — what each student actually masters and when — so there's nothing to analyse, no signal to tell you which parts of the curriculum work and which don't. You cannot improve what you don't measure, and most schools don't measure.
5. Curricula are bought, not built. Partly as a result of all the above, many schools simply license an off-the-shelf textbook series and follow it. The curriculum updates when the publisher issues a new edition — driven by sales cycles — not when the evidence moves. There's no internal expert asking "is this still the best we can do?", because there's no internal expert at all.
Notice how these reinforce each other. No experts means no data culture; no data means nothing to research; firefighting means no time to build either; and invisible quality means no market reward for trying. It's less a conspiracy than a trap — a stable, self-perpetuating equilibrium that keeps the people who could fix language teaching outside the buildings where it happens.
Why we built it the other way round
We started from the opposite end, deliberately, because the only way out of that trap is to invert every part of it at once.
Choc Education was founded by linguists, and pedagogy expertise sits in the design and management of the school, not bolted on as decoration — the people interpreting the research are the people shaping the lessons. We pay and treat our teachers as the staples of society they are (the full argument is in Why We Pay Our Teachers Well), and that isn't only about fairness: great, well-supported teachers don't need babysitting, which is precisely what frees management to spend its time on development instead of policing. We track learning data through our own ecosystem, so our experts have a real signal to work with — actual evidence of what students master, where they stall, what to change. And because of all that, our curriculum is built and continually revised in-house against the evidence, not licensed and left to a publisher's schedule.
Each piece depends on the others. Good teachers free management; freed management can run research; research needs the data the ecosystem provides; and the whole thing only matters because linguists and pedagogy experts are inside the building to make sense of it. It's the same trap as everyone else's — run in reverse, on purpose, so that it compounds in your favour instead of against you.
That's the real difference between most language schools and a good one. It isn't the carpet, the location, or the nationality of the teacher at the front of the room. It's whether anyone in the building actually studies, for a living, the thing the building exists to do.
Want to see what an evidence-built school feels like? Read our ethos, come to an event, or browse our courses. We're always happy to explain the why.