St Martin's Preparatory School
School summary
A small independent prep school in Grimsby, St Martin's takes children from age two through to eleven, with around 154 pupils on roll. Led by Head Mr Joel Jackson, it has no religious affiliation and educates boys and girls together as day pupils. Its compact size lends itself to a close-knit community where staff are likely to know each child well. The Independent Schools Inspectorate rated the school 'good' overall, while singling out personal development as 'excellent'.
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
- ISI rating
- good
- ISI personal development
- excellent
- Last inspected
- 9 December 2025
Teaching & academics
The ISI judged the quality of education 'good'. Parents should note, however, that the school did not meet all regulatory compliance standards at its most recent inspection, an area worth raising directly when visiting.
Head · Mr Joel Jackson
School life & ethos
- Religious character
- None
- Boarding
- No
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Watch Passmate decide how to teach.
Answer as a child would. Left: what they see. Right: what it learns about them.
A small, all-through prep where personal development is rated excellent; ask the school how it is addressing the compliance findings.
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.
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St Martin's Preparatory School 11+: frequently asked questions
Compiled from public data. Last checked 5 June 2026.