Why does aitutors.me refuse to give answers? Why does Professor Pi run a four-level hint ladder? Why insist on "show your working"? These are not novel ideas dressed up in AI clothing. They sit inside a tradition of one-to-one Socratic teaching that is, by some counts, the oldest functioning intellectual technology in the West — and one the UK independent school sector has been a remarkably good custodian of.

This piece is a short history. It matters because the AI tutors that get the tradition wrong will fail. The ones that get it right will do something the broader edtech industry has been talking about for forty years and has rarely delivered.

Athens, ~400 BC

Socrates didn't write anything down. What we have is Plato's reconstruction — a teaching style in which the teacher asks questions rather than delivers answers, and the student arrives at understanding through the friction of their own thinking. The Meno is the canonical example: an enslaved boy is led, through questions alone, to discover a piece of geometry he could not have stated when the conversation started.

Two ideas come out of this that we still recognise:

  1. Understanding is not the same as memorisation. A student who can repeat a fact has not yet understood it.
  2. The teacher's job is to make the student do the thinking. Information transfer is not teaching.

These ideas are 2,400 years old. They are also entirely consistent with what a well-designed AI tutor should do.

The medieval university and the disputation

Fast-forward to the 12th and 13th centuries. The newly founded universities at Bologna, Paris, and Oxford run on disputations — public, structured argument in which a student defends a thesis against questioning from a master. The form is Socratic: the student is forced to articulate, to be challenged, to revise.

The model spreads, including to the early English public schools. It is the ancestor of the Oxbridge tutorial.

The Renaissance and Eton's founding

Eton was founded in 1440. It inherits, in form, the medieval grammar-school structure: classics, Latin, public examination by the master. Over the following centuries, particularly through the 18th and 19th, the tutorial — one master, one or a small number of pupils, sustained intellectual conversation — becomes a hallmark of the elite English schools.

The tutorial is not lectures. It is not worksheets. It is a master asking a pupil to defend a position, point out a contradiction in their argument, work through a problem aloud. A modern Oxbridge tutorial would be recognisable to a 19th-century Etonian master, who would in turn recognise it as inherited from the medieval disputation, which inherited it from Athens.

Few institutional forms survive that long. The reason is that it works.

The 20th century and the move to mass education

Mass education in the 20th century requires teachers to teach thirty children, not three. The tutorial form does not scale. It survives in the universities (Oxford and Cambridge keep it; the US Ivy League partially retains it through small seminars) and at the elite end of independent schooling (Westminster, St Paul's, Eton, Wycombe Abbey, Marlborough, and others continue forms of tutorial structure to varying degrees).

For most of the rest of education, the tutorial gives way to the lecture and the textbook. Teaching becomes content delivery. The Socratic mode survives in academic philosophy departments and a small number of legal-pedagogy seminars in the US.

Edtech and the failed promise

From roughly 1980 to 2022, the edtech industry repeatedly promised to deliver "personalised one-to-one tutoring at scale." It mostly didn't. The products that shipped were:

  • Adaptive content delivery. A computer that selected the next problem from a bank. Useful, but not Socratic.
  • Video lectures with quizzes. Khan Academy in its first decade, Coursera, edX. Excellent for content, not personalised in the way a tutorial is.
  • Worksheets dressed as software. The bulk of the K-12 edtech market.

The thing none of these could do was the conversation. The follow-up question that adapts to the specific wrong move the specific student made. That is what the tutorial format is, and software couldn't manufacture it.

2022 and the return of conversation

In late 2022, large language models became good enough at conversational tutoring that, for the first time since the printing press, the marginal cost of a Socratic conversation collapsed. Not perfectly — and not for every subject — but for many topics, for many students, the AI is now a meaningful Socratic interlocutor.

Sal Khan, who has been thinking about this for fifteen years, was one of the first people to see it clearly. His "two-sigma" speech in 2023 was an open argument that the AI tutor of 2025 could deliver what Bloom proved one-to-one human tutoring delivered in 1984 — and at near-zero marginal cost. Khanmigo is his attempt at it.

Anthropic and Claude, which aitutors.me is built on, have been remarkably good at this conversational mode out of the box, with the right system prompts.

The four-level hint ladder, in this tradition

Professor Pi runs a four-level hint ladder. The hints escalate from "what do you already know?" (Level 1, the most Socratic, no information given) to "here is a worked example with one number changed" (Level 4, the most direct, used only as a last resort).

This is not a UX flourish. It is a deliberate reproduction of how a good tutorial actually works. The Eton classics master asking a 14-year-old to translate a Tacitus passage starts with "what do you make of res?" — not "the translation is..." And when the student is stuck, the master escalates by tiny degrees, never giving the whole game away.

The ladder is the tradition, encoded.

What this means for independent school parents

When you choose an AI tutor for your child, ask yourself one question: does this product behave like a good human tutor in a small tutorial — or does it behave like a worksheet generator that talks?

The former is in the Socratic tradition. The latter is in the worksheet tradition. The two have very different long-term effects on the child's thinking.

The schools that take this seriously — the schools you are paying for — are not picking between AI or no AI. They are picking between AI that respects the tradition and AI that doesn't. That is the conversation worth having with the Head of your child's school this term.

A closing thought

The Socratic conversation does not belong to AI, to Anthropic, to aitutors.me, or to any of the schools mentioned in this article. It belongs, in some sense, to the long line of teachers who have known that the right move with a stuck student is a better question, not a better answer.

What's new is that, for the first time, that move is available to every child with an internet connection. The job of the next decade is to make sure that's a real upgrade — not a worksheet pretending to be a tutorial.

Jason runs aitutors.me. He read Classics, briefly, before discovering that not every reading-of-Tacitus has a good ending. Updated 21 May 2026.