St Mary's Preparatory
Oxfordshire, Oxfordshire, South East · RG9 1HS
With just 110 pupils from ages three to eleven, St Mary's Preparatory is a small, intimate independent school in Oxfordshire where children are likely to be known as individuals rather than faces in a crowd. The Independent Schools Inspectorate awarded its highest rating of "excellent", and the school met all compliance requirements at its most recent inspection. Led by Head Mr Stephen Blundell, this is a co-educational, non-denominational setting that takes pupils through the full preparatory journey. Its compact size will suit families seeking a close-knit community and a gentle, sustained transition from the early years to the end of primary.
110
Pupils
excellent
ISI
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Open in Google Maps ↗Overview & data
- Gender
- Mixed
- Type
- independent (fee-paying) school
- Age range
- 3-11
- Pupils
- 110
- Location
- Oxfordshire, Oxfordshire, South East
- Website
- https://www.stmarysprep.co.uk/
- Telephone
- 01491 573118
Headteacher
Head Mr Stephen Blundell
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Teaching & academics
The ISI judged the school "excellent", its top grade, reflecting strong outcomes across the prep years. As a small school spanning ages three to eleven, it can offer continuity and close attention as children progress towards the 11+ stage.
Ethos & heritage
- Religious character
- None
- Boarding
- No
Inspection reports
- ISI rating
- excellent
- ISI personal development
- excellent
- Last inspected
- 10 February 2026
The last word
A small Oxfordshire prep with top marks from the inspectors for both academics and personal development. Best suited to families who value a close community over scale.
The Passmate verdict
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St Mary's Preparatory 11+: frequently asked questions
Where is St Mary's Preparatory located?
St Mary's Preparatory is located at 13 St Andrew’s Road, Henley-on-Thames, Oxfordshire, RG9 1HS.
What type of school is St Mary's Preparatory?
St Mary's Preparatory is an independent (fee-paying) school in South East.
How many pupils attend St Mary's Preparatory?
St Mary's Preparatory has approximately 110 pupils on roll.
What is St Mary's Preparatory's inspection rating?
St Mary's Preparatory is inspected by the ISI and was judged "excellent" at its inspection on 10 February 2026.
Compiled from public data. Last checked June 2026.