Data profile
Independent girls senior school in Berkshire for ages 11–18, day or boarding. Selective entry, top-tier fees.
Where leavers go after sixth form.
Class of 2025
A level A*–A and GCSE 9–7, recalibrated for 2026.
Recalibrated
| Entry | Year | Places | Assessment | Day fee (max) | Boarding fee (max) |
|---|---|---|---|---|---|
| 11+ | Year 7 | 40 | School's own exam · Interview · Reference / report | £46.8k | £65.7k |
| 13+ | Year 9 | 20 | School's own exam · Interview · Reference / report | £46.8k | £65.7k |
| 16+ | Lower Sixth | 5 | School's own exam · Interview · Reference / report | £46.8k | £65.7k |
Our composite score, broken down by pillar.
Index score
73
/ 100
National rank #74
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 ISI report →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.
Schools families applying here also consider.
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%.
Matched on sex, boarding, entry phase, location, fee band, tier and outcomes. Scoring: 0.45 outcome similarity, 0.25 structured, 0.10 embedding, 0.20 AI re-rank. Refreshed yearly and when a profile changes.
Open days, bursaries and how to apply: St Mary's School Ascot profile →