A prep school is a machine built for exactly one output: delivering a well-prepared child to a senior school at 13. A state primary is not, and was never meant to be. If your child is in the state sector and you are looking at 13+ entry to an independent senior school, that structural difference — not anything about your child — is the thing you are up against, and you deserve the real picture of it before the encouraging bits.

So here is the real picture, followed by the encouraging bits, which are genuine.

What the prep route actually provides

It is worth itemising what a prep school delivers, because each item is a thing a state-sector family must either replace or decide they don't need.

  • A curriculum aimed at the exam. Prep schools run to age 13 and teach the Common Entrance syllabus as their ordinary timetable — including subjects a state school reasonably doesn't offer, such as Latin, and CE-style extended writing and papers practised as routine classwork from Year 7 or earlier.
  • Years of runway. Preparation for 13+ at a prep school is not a project bolted onto normal school; it is normal school, from Year 5 or 6 onwards, including administration of the ISEB Common Pre-Test in Year 6 or 7.
  • Information. This is the largest advantage and the least visible. A prep school head has sent children to the target senior schools for years. They know which school suits which child, what each school's papers look like, when to register, what the interview is like, how to read a rejection, and — crucially — they will often have a candid relationship with the senior school's admissions team. Their reference is written in a language the receiving school trusts.
  • Calibration. A prep-school child is surrounded by a cohort doing the same thing, so the family always knows roughly where the child stands against the actual competition.

None of this is about the children. State-primary children are not less able, and senior schools know it — admissions teams see strong state-sector candidates every year and take them. The disadvantage is one of curriculum alignment and information, and both of those can be worked on. Ability cannot be bought; alignment and information can be assembled.

The state route: what you are signing up to run

If your child stays in the state sector — primary to Year 6, then a state secondary for Years 7 and 8, moving at 13 — then the family becomes the project manager for everything above. Concretely:

1. The timeline arrives earlier than instinct says. Many senior schools that use the ISEB Common Pre-Test close registration in Year 5 or Year 6, with the pre-test sat in Year 6 or 7 — while your child is still at primary school and a 13+ start feels years away. A family that begins researching in Year 7 will find the most oversubscribed schools already closed, though plenty of good schools remain open later. The first job, before any tutoring decision, is a dated map: for each candidate school, when registration closes, what is sat and when, and what an offer is conditional on.

2. The assessment may not be Common Entrance at all. CE is built around the prep curriculum, and senior schools understand that a state-school child has not been taught it. Many assess non-prep candidates through the pre-test, their own entrance papers — typically maths, English and sometimes science or reasoning — and an interview, rather than CE. This is good news, but it makes one phone call non-optional: ask each school exactly what your child would sit. The answer differs school by school, changes over time, and determines what preparation even means. Guessing is how families prepare for the wrong exam.

3. The curriculum gaps are specific, not general. A well-taught state pupil is not "behind"; they have been taught a different, entirely legitimate syllabus. The recurring misalignments are predictable: no Latin (rarely fatal — schools generally don't demand it of state candidates, but check if a particular school does); less practice at long-form timed papers and extended writing to a mark scheme; some maths topics met later or in a different order than CE assumes; and little exposure to reasoning-test formats before the pre-test. The fix is targeted work on the actual gaps for the actual assessment — not a panicked attempt to replicate a prep education in evening sessions.

4. Someone has to do the knowing. The information a prep head carries has to be reassembled: open days, direct and specific questions to registrars (they answer them; helping families through this is their job), and a realistic view of which schools suit the child. Be careful with second-hand folklore from forums — school policies change, and much of what circulates is out of date.

The middle road: prep school at 11

Many prep schools take children at 11 for Years 7 and 8, and a meaningful number of state-primary families use exactly this route: two years of aligned curriculum, exam technique, cohort calibration and a head's advocacy, purchased at the price of two years' fees and an extra school move. Some senior schools' lower-competition entry points also make this the pragmatic path to a particular school.

Whether it is worth it depends on three things: the target schools (if they assess non-prep candidates on their own papers anyway, the prep's CE machinery matters less), the money (two years of prep fees is a large sum that could otherwise part-fund the gap-closing directly), and the child (two moves in three years suits some children and unsettles others). There is no general answer; there is a per-family one.

What actually closes the gap from a state primary

If you stay state, the work divides cleanly:

  • Information first. The dated map of schools, registrations and assessments, built from the schools themselves. This costs phone calls, not money, and it is the prep advantage most fully replaceable at home.
  • Fluency on the core. Whatever the school sets, secure, quick, accurate maths and strong reading and writing carry most of the load. Steady practice over years beats intensity in the final months — which is also why the state route rewards starting early far more than it rewards spending heavily.
  • Format familiarity, proportionate. Enough exposure to the pre-test's online adaptive format and to timed papers that the format itself isn't a shock on the day. This is weeks of familiarisation, not years of drilling.
  • Extended writing to time. The one classroom habit hardest to replicate alone: planning and producing a piece of writing in a fixed window, regularly, with someone reading it critically afterwards.
  • A candid relationship with the schools. Registrars will tell you what they look for and, often, how state-sector candidates fare. Schools that want a broader intake — and many genuinely do — will meet you halfway.

For the daily-practice layer of this, structured tutoring can carry some of the load a prep timetable would otherwise carry — that is the honest extent of what any tutoring, human or AI, contributes to this route. What it cannot replace is the information work, which stays with you.

The honest summary

The prep route buys alignment and information as a package, at prep-school prices, with a school built around the outcome. The state route keeps the money and a normal local childhood, and asks the family to assemble alignment and information themselves, starting earlier than feels natural, with the schools' admissions teams as active allies rather than gatekeepers. Children succeed by both roads every year. The families who struggle on the state route are almost never short of able children — they are short of the map, and they found that out late. Get the map early, and the rest is ordinary, patient work.

FAQ

Can a child at a state school get into an independent senior school at 13+?

Yes — senior schools admit state-sector children at 13+ every year, and most are welcoming to them. But the family carries the work a prep school would otherwise do: knowing the timeline, registering on time (often in Year 5 or 6), preparing for the pre-test, and covering curriculum ground that prep schools teach and state schools reasonably don't.

Does a state-school child have to sit Common Entrance?

Often not. Common Entrance is built around the prep-school curriculum, and many senior schools assess non-prep candidates through their own papers, the pre-test and an interview instead. Ask each school directly what your child would sit — the answer varies by school and is the single most important piece of information to get early.

When do we need to start if our child is at a state primary?

Earlier than feels natural: many senior schools that use the ISEB Common Pre-Test expect registration in Year 5 or Year 6, with the pre-test sat in Year 6 or Year 7. A family that starts looking in Year 7 will find some doors already closed at the most oversubscribed schools — though by no means all.

Is moving to a prep school for Years 7 and 8 worth it?

It can be — many preps take children at 11 precisely for this, and two years of aligned curriculum, exam technique and a head who knows the senior schools closes most of the structural gap. Weigh it against two years of fees, a school move either side, and whether the target senior school even requires what the prep teaches.