Haberdashers' Boys' School and Haberdashers' Girls' School, both in Elstree, Hertfordshire, are among the strongest-performing independent day schools in the country — and both use the ISEB Common Pre-Test as the opening stage of entry into Year 7. If your child is aiming for a Habs place at 11+, the single most important thing to understand is that this is an online, adaptive, multiple-choice test that behaves quite differently from a traditional paper grammar-school exam. This guide explains exactly what the Pre-Test is, how each school's selection works, and how to prepare in a way that matches the format rather than fighting it.
The Habs route at a glance (verified 2026)
Habs is not part of a local authority grammar system, so there is no council-run test, no aggregate pass mark and no catchment. Instead, each school runs its own admissions process built around the ISEB Common Pre-Test. In broad terms the journey looks like this:
| Stage | Habs Boys' | Habs Girls' |
|---|---|---|
| Registration | Autumn of Year 6 (check the school site for the exact closing date) | Autumn of Year 6 |
| Stage 1 | ISEB Common Pre-Test (on screen, typically November) | ISEB Common Pre-Test (on screen) |
| Stage 2 | Interview and written paper for shortlisted candidates (January) | Interview plus a written assessment on interview day |
| Offers | February | February |
Always confirm the current year's dates and requirements directly with each school, as timings and interview arrangements are reviewed annually. The structure above is the settled pattern rather than a guarantee for any single admissions cycle.
What the ISEB Common Pre-Test actually is
The ISEB Common Pre-Test is a digital, adaptive assessment sat on a computer, usually at the child's own primary school or at a test centre, in Year 6 (a minority of schools sit candidates in Year 5). It is designed to give many senior schools a single, standardised early snapshot so families do not have to sit multiple separate entrance tests. It covers four areas:
- English — reading comprehension and language/grammar
- Maths — pitched to the Key Stage 2 curriculum, roughly up to Year 5 content
- Verbal Reasoning (VR) — words, logic and word-based problem solving
- Non-Verbal Reasoning (NVR) — shapes, patterns, sequences and spatial logic
The whole test runs to roughly two and a half hours, usually split so it can be taken in sittings rather than one unbroken block. Every question is multiple choice.
Why "adaptive" changes how you prepare
The word that trips families up is adaptive. Each section adjusts its difficulty as your child answers: get questions right and the software serves harder ones; slip and it eases back. Two children sitting the same test can therefore see completely different questions. Three consequences follow, and they should shape your revision:
- You cannot revisit questions. Once answered, a question is gone. There is no flagging-and-returning, so a confident, considered first answer matters far more than on a paper test.
- Early questions carry weight. Because the test calibrates from your child's opening answers, a careless slip near the start can steer the whole section. Reading carefully in the first few minutes is genuinely important.
- Pace is self-managed. There is no invigilator reading out timings for each subsection, so children need an internal sense of when to commit and move on.
This is why on-screen practice beats paper drilling for the ISEB. The skill of reading a question on a monitor, choosing an option and moving forward without second-guessing is a distinct habit, and it is one you can rehearse.
How the two Habs schools differ
The Boys' and Girls' processes are close cousins. Both open with the Pre-Test and both invite shortlisted candidates back for interview. The Girls' school layers a written assessment onto interview day, so strong written English and clear handwriting matter alongside reasoning. For the Boys', the January stage pairs an interview with a written paper. In both schools, the interview is not a trap — it is a chance to see a curious, articulate child who reads widely and can talk about their interests. Strong Non-Verbal Reasoning tends to carry real weight in the Pre-Test stage, partly because it is harder to over-coach and gives schools a cleaner read of raw problem-solving.
A sensible Habs preparation plan
- Build the four foundations first. Secure KS2 maths and comprehension, then layer VR and NVR technique on top. Our free worksheets cover every question type by strand.
- Move to the screen early. Once technique is solid, rehearse under timed, on-screen conditions so the adaptive format feels normal. Timed mock papers build that stamina.
- Drill Non-Verbal Reasoning hard. Rotations, reflections, matrices and odd-one-out reward pattern-spotting practice more than almost anything else.
- Rehearse the interview. Talking about a favourite book or hobby with a friendly adult is worth more than any cramming.
- Keep it steady. A calm term of short, regular sessions beats a frantic fortnight. Our revision hub helps you plan the run-in.
Quest Arena's centre-specific library includes ISEB-style mock packs and a separate Habs interview practice set, so you can practise the exact format your child will meet. If you are still mapping out the wider admissions calendar, our 11+ process guide and key dates page put the Habs timeline in context.
Frequently asked questions
Do Habs Boys' and Girls' use the ISEB Pre-Test?
Yes. Both Elstree schools use the ISEB Common Pre-Test as the first stage of 11+ entry into Year 7, followed by interview and a written element for shortlisted candidates.
How long is the ISEB Common Pre-Test?
Around two and a half hours in total, covering English, Maths, Verbal Reasoning and Non-Verbal Reasoning. It is usually broken into sittings, is entirely multiple choice, and is taken on a computer.
Can my child go back and change answers on the Pre-Test?
No. The test is adaptive and questions cannot be revisited once answered, which is why careful, confident first responses — especially early in each section — matter so much.