GirlsIndependent

St Mary's School

Gerrards Cross, Buckinghamshire, South East · SL9 8JQ

Founded in 1872, St Mary's is a small Anglican day school for girls in Gerrards Cross, educating around 440 pupils from age 3 through to the sixth form. Its intimate scale is reflected in a sixth form of just 52, and the school's pastoral character is borne out by an Independent Schools Inspectorate judgement of "excellent" for both education quality and personal development, with all compliance standards met. A notably high proportion of pupils, over 44 per cent, receive some form of SEN support, suggesting a school attentive to individual learning needs. Day fees range from around £13,000 to £26,700 a year.

440

Pupils

excellent

ISI

£26,676

Day fees / yr

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Overview & data

Gender
Girls
Type
independent (fee-paying) school
Age range
3-18
Pupils
440
Location
Gerrards Cross, Buckinghamshire, South East
Website
www.stmarysgx.co.uk
Telephone
01753 883370

Entrance & admissions

Entry age
11

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Headteacher

Head Mrs Patricia Adams

Latest results

Attainment 8

37.6

National average 46.9

GCSE grade 5+ (English & Maths)

2%

National average 47%

GCSE grade 9-7

50%

A-level A*-A

64%

Teaching & academics

Results sit below national benchmarks at GCSE, with an Attainment 8 score of 37.6 against a national average of 46.9 and 2 per cent achieving grade 5 or above in English and Maths, though half of grades fall in the 9-7 band. The sixth form looks stronger, with 64 per cent of A-level entries graded A*-A and popular choices including Sociology, Psychology, Mathematics and Economics. Alongside GCSEs and A-levels the school offers the EPQ, and languages on offer are French and Spanish.

Sixth form

Sixth-form pupils
52

Popular A-level subjects

SociologyPsychologyMathematicsEconomics

Qualifications offered

GCSEA-levelEPQ

Learning support & SEN

SEN support
44.42%
EHC plans
2.28%

Arts & extracurricular

Scholarships

Academic scholarshipsArt scholarshipsMusic scholarshipsDrama scholarshipsSport scholarshipsDance scholarships at 16

Languages

FrenchSpanish

Popular GCSE subjects

SpanishReligious StudiesPhysicsPhysical Education/Sports StudiesMedia/Film/TV StudiesHistoryGeographyFrenchEnglish LiteratureDrama & Theatre StudiesD&T Food TechnologyChemistryBusiness StudiesBiologyArt & Design

Sport

Main sports

NetballGymnasticsBadminton

Beyond the classroom

Netball, gymnastics and badminton lead the sporting programme, and the breadth of scholarships, spanning art, music, drama, sport and dance, signals a school that values pursuits beyond the classroom.

Ethos & heritage

Founded
1872
Religious character
Anglican
Boarding
No

Mobile phone policy

No mobile phones allowed in prep. Senior house students must hand phones in at the beginning of each day and collect at the end. Sixth form allowed to use phones in certain areas in designated Sixth Form centre but nowhere else in school.

Money matters

Day fees (per year)
£13,104 - £26,676

Small number of means-tested bursaries available

Inspection reports

ISI rating
excellent
ISI personal development
excellent
Last inspected
4 November 2024
Read the full inspection report ↗

The last word

A small, established girls' school whose pastoral strengths and individual attention may matter more to many families than its headline GCSE figures.

The Passmate verdict

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St Mary's School 11+: frequently asked questions

Where is St Mary's School located?

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

What type of school is St Mary's School?

St Mary's School is an independent (fee-paying) school in South East.

How many pupils attend St Mary's School?

St Mary's School has approximately 440 pupils on roll.

What is St Mary's School's inspection rating?

St Mary's School is inspected by the ISI and was judged "excellent" at its inspection on 4 November 2024.

Compiled from public data. Last checked June 2026.