Gerrards Cross, Buckinghamshire · SL9 8JQ
St Mary's is an all-through independent girls' school in suburban Gerrards Cross, serving pupils from age 3 to 18. The school combines traditional pastoral care with contemporary academic provision across a purpose-designed campus. As an unranked independent day school without recent Ofsted inspection, it operates with the flexibility typical of smaller, well-established girls' schools in the Home Counties.
Who thrives here
Pupils who benefit from nurturing, structured environments and prefer day-school flexibility. The school suits academically capable girls who thrive in single-sex settings with strong emphasis on personal development alongside academics.
Percentiles within UK independent + grammar schools we track.
Packhorse Road
Gerrards Cross, Buckinghamshire
SL9 8JQ
Nearest stations
Day fees at St Mary's School are approximately £16,500 per year (2024/25).
St Mary's School admits pupils at 3+, 4+, 7+, 8+, 11+, 13+, 16+. Entry is assessed by Interview, Assessment. See the Admissions section above for open days and key dates.
At St Mary's School, 0% of A-levels were graded A*–B and 43.9% of GCSEs were grade 7/A or above. Full results are in the Results section above.
St Mary's School is a day school in Gerrards Cross and does not offer boarding.
ISI rated St Mary's School “Good” (2025).
Frequently praised
✓Nurturing, caring ethos and strong pastoral oversight
✓Continuity of care and relationships through all-through structure
✓Accessible location and day-school format suits working families
Common concerns
!Lack of recent independent inspection may concern some parents seeking accountability evidence