Classpot

St Mary's School

Buckinghamshire, SL9 8JQAll-throughAges 3–18GirlsPrivate

About St Mary's School

St Mary's School is an independent day school in Buckinghamshire, South East, for pupils aged 3 to 18 for girls. GIAS records 391 pupils on roll and a published capacity of 475.

Figures can refer to different reporting periods. Check the date and source shown beside each section. How Classpot uses published data.

GIAS school facts

Official identity and contact facts; operational fees and services appear only when separately reviewed.

Age range
3–18
Education stages
Early years, Primary, Secondary, Sixth form
Gender
Girls
Pupils on roll
391
Published capacity
475
Inspectorate
ISI inspection regime
Day-school evidence
No boarders; Does not have boarders
Area classification
Urban: Nearer to a major town or city
Address
Packhorse Road, Gerrards Cross, Buckinghamshire, SL9 8JQ
Telephone
01753883370
School website
Visit official website

Source: GIAS establishment record · published 20/08/2026

Pupils and staffing

Official figures for 2025/26.

Pupils
391
Girls / boys
391 / 0
Teachers (headcount)
66
Teachers (FTE)
51.5
Pupils per teacher FTE — not class size
7.6
Area classification
Urban: Nearer to a major town or city

Source: official publication (04/06/2026) · official publication (04/06/2026)

Destinations of 2022/23 leavers

Historical DfE destination measures; these do not describe the current leaving cohort.

Level 3 cohort
15
Sustained destination
86.7%
Higher education
60%

Source: official publication (23/04/2026)

Was this page helpful?