Data profile
Independent girls senior school in Berkshire for ages 11–18. Selective entry, top-tier London fees.
01 · Module
Where leavers go after sixth form.
Class of 2025
02 · Module
A-level top grades and GCSE 9–7, post-2026 methodology recalibration.
Recalibrated
03 · Module
Ages, deadlines and annual fees per route.
| Entry | Year | Places | Assessment | Day fee (max) | Boarding fee (max) |
|---|---|---|---|---|---|
| 11+ | Year 7 | 40 | school_own_exam, interview, reference | £46.8k | £65.7k |
| 13+ | Year 9 | 20 | school_own_exam, interview, reference | £46.8k | £65.7k |
| 16+ | Lower Sixth | 5 | school_own_exam, interview, reference | £46.8k | £65.7k |
04 · Module
Composite score blending owned data with external consensus.
Index score
71
/ 100
National rank #55
05 · Module
Latest inspection rating and report.
ISI
met
Inspected 2025-01-21
St Mary's School Ascot met all regulatory standards in January 2025 ISI inspection. Awarded significant strength for development of pupils' social understanding.
Read full report →07 · Module
Houseroom's view of the school.
St Mary's is considered the leading girls' Catholic boarding school in the UK, with high demand from parents including those outside the Catholic faith. Academic results are described as incredible and are achieved without piling on too much pressure. The school has just under 400 girls (ages 11–18) and maintains a small-school feel, with no risk of pupils being overlooked. It is larger than close neighbours Heathfield and St George's Ascot.
08 · Module
The schools a family applying here would also be considering — chosen by sex, boarding, entry phase, geography, fees, tier and outcomes, with an admissions-adviser AI re-rank.
Downe House is a girls' school with both day and boarding options, located in Berkshire within a reasonable 42km commute, sharing a similar selectivity tier and fees significantly lower but still top-tier, and overlapping entry phases at 11+ and 13+.
Woldingham School is a girls' school offering both day and boarding, with selective entry at 11+ and 13+, fees somewhat lower but still top-tier, and a commute of 45km from Ascot.
Roedean School is a girls' school with day and boarding options, selective entry at 11+ and 13+, fees lower but within top-tier range, and a commute of 76km, making it a plausible Plan B or C.
Bradfield College is co-educational with both day and boarding, located in Berkshire 33km from Ascot, with selective entry at 13+ and 16+, fees slightly higher but comparable, and a strong academic record including a 5% Oxbridge rate.
Wellington College is a co-ed school with day and boarding, very close at 10km from Ascot, selective entry at 13+ and 16+, fees comparable to St Mary's, and a high Oxbridge rate of 8.7%.
Peers refreshed annually plus on-write. Filters: sex, boarding, entry phase, geography, fee band, tier. Scoring: 0.45 outcome similarity + 0.25 structured + 0.10 embedding + 0.20 AI re-rank.
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