Is St Mary's School a girls school?

Yes — St Mary's School is a girls school.

How many pupils does St Mary's School have?

St Mary's School has 439 pupils on roll, according to Department for Education data.

How does St Mary's School perform at GCSE?

Pupils at St Mary's School achieved an average Attainment 8 score of 39.4 in 2025/26.

Where is St Mary's School?

St Mary's School is located at Packhorse Road, Gerrards Cross, Buckinghamshire, SL9 8JQ.

St Mary's School

Packhorse Road, Gerrards Cross, Buckinghamshire, SL9 8JQ

Not rated

Not yet inspected

Not inspected

Ofsted

39.4

Attainment 8

3–18

Ages

439

Pupils

Girls

Gender

Other independent school

Type

About St Mary's School

St Mary's School is an independent school in Gerrards Cross, Buckinghamshire, England, for pupils aged 3–18. It has 439 pupils on roll and admits girls pupils only. The school has a Anglican religious character. At GCSE, pupils achieved an average Attainment 8 score of 39.4 (2025/26). 0% of pupils are eligible for free school meals.

School Information

Local Authority: Buckinghamshire →
School Type: Other independent school
Age Range: Ages 3–18
Gender: Girls
Pupils / Capacity: 439 / 475 (92%)
Sixth Form: Has a sixth form
Nursery: Has Nursery Classes
Religious Character: Anglican

Pupil profile

2025/26

Who attends this school — useful context if you’re considering teaching here.

Free school meals

2.3%

SEN support

44.4%

EHC plan

Source: DfE School Census, 2025/26, licensed under the Open Government Licence v3.0.

Results & performance

2025/26

Official Department for Education results, pupil destinations and attendance.

Sixth form (Key Stage 5)

B-

A-level average grade

21 students

AAB+ (2 facilitating)

Source: Department for Education performance tables, 2025/26, licensed under the Open Government Licence v3.0. Some independent schools’ qualifications (e.g. IGCSEs) are not all reflected in these figures.

Contact Details

Address: Packhorse Road, Gerrards Cross, Buckinghamshire, SL9 8JQ
Phone: 01753883370
Headteacher: Lars Fox
Website: www.stmarysgx.co.uk

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Frequently asked questions

What type of school is St Mary's School?: St Mary's School is an independent school in Gerrards Cross, Buckinghamshire, England, for pupils aged 3–18.
Is St Mary's School a girls school?: Yes — St Mary's School is a girls school.
How many pupils does St Mary's School have?: St Mary's School has 439 pupils on roll, according to Department for Education data.
How does St Mary's School perform at GCSE?: Pupils at St Mary's School achieved an average Attainment 8 score of 39.4 in 2025/26.
Where is St Mary's School?: St Mary's School is located at Packhorse Road, Gerrards Cross, Buckinghamshire, SL9 8JQ.

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