John Lyon School Prep
School summary
Set in Harrow, John Lyon School Prep is a small, mixed independent school of around 235 pupils, inter- and non-denominational in character and inspected by the ISI. Its modest size is reflected in a close community feel, though the pupil-to-teacher ratio of roughly 18 sits at the higher end for the independent sector. The school is led by Head Mrs Sonal Chatrath and offers 11+ entry. It will suit families looking for a non-denominational day school within the wider John Lyon foundation.
Where every mark matters.
Places are limited and demand is high, so exam performance is what sets candidates apart. Passmate turns the months ahead into ten focused minutes a day on the exact topics this school tests.
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Inspection reports
Teaching & academics
As a preparatory school, John Lyon focuses on building solid foundations ahead of 11+ entry. Teaching is overseen within an ISI-inspected framework, and the ratio of around 18 pupils per teacher means class sizes are larger than at some smaller independents.
Head · Mrs Sonal Chatrath
School life & ethos
- Religious character
- Inter- / non- denominational
- Boarding
- No
Fees & bursaries
- Day fees (per year)
- £17,901 - £20,370
A small number of means-tested bursaries, with priority given to armed forces, emergency services and teachers
Schools nearby
Heartwood House
Harrow, Greater London
Harrow School
Harrow on the Hill, Greater London
The John Lyon School
Harrow-on-the-Hill, Greater London
Buckingham Preparatory School
Pinner, Greater London
Orley Farm School
Harrow, Greater London
Reddiford School
Pinner, Greater London
Watch Passmate decide how to teach.
Answer as a child would. Left: what they see. Right: what it learns about them.
A small, mixed prep in Harrow for families who value a non-denominational setting and a clear path through 11+ entry. A limited number of means-tested bursaries give priority to the children of armed forces, emergency services and teachers.
That’s where Passmate comes in. Tutoring is the most effective thing in a child’s preparation - a well-tutored child can outperform the vast majority of their peers. Passmate works alongside your tutor, not instead of them: it learns how your child thinks, finds the gaps, and shows the tutor exactly where to spend each session - so the limited time you have lands on what actually decides a place.
Works alongside your child’s tutor - not instead of them.
Free month · No payment needed
John Lyon School Prep 11+: frequently asked questions
Compiled from public data. Last checked 5 June 2026.