School profile
St Swithun's School
Winchester, Hampshire, United Kingdom · Girls · Ages 11–18
488
Students
207
Boarders
73%
Boarders who stay at weekends
About the school
St Swithun's School is a girls' day and boarding school for 488 pupils aged 11–18 in Winchester, Hampshire, 207 of them boarders.
It ranked 65th among UK independent schools and 78th overall in the Sunday Times Parent Power 2026; in 2025, 71.7% of A level grades were A*/A and 77.4% of GCSE grades 9–7.
Key facts for parents
Academics
2025: A level 34.3% A*, 71.7% A*/A, 91.8% A*/B; GCSE 77.4% 9–7 (Sunday Times Parent Power 2026). Average class up to GCSE 15–18; pupil–teacher ratio 6:1 (GSG 2026). The school has a STEM focus, especially Biology, Chemistry and Maths, plus strong Geography and Psychology (GSG 2026).
Where leavers go
2025: 7 Oxbridge places and 11 medics (GSG 2026).
Recognition
Sunday Times Parent Power 2026 (2025 results): 65th of UK independent schools and 78th in the combined state and independent table (A level 71.7% A*/A, GCSE 77.4% 9–7; A-level rank 52=, GCSE rank 131).
For international families
There are 207 boarders (151 full, 56 weekly). Entry is through the ISEB Common Pre-Test in the autumn of Year 6 plus the school's own papers; overseas candidates can take UKiset instead (GSG 2026).
Good to know
London is about 1 hour by train from Winchester.
Rankings
Sunday Times Parent Power
#65
UK independent schools (2026)
Sunday Times Parent Power
#78
State and independent, combined (2026)
Exam results
GCSE
9–7 (A*–A)
77.4%
A Level
A*
34.3%
A*–A
71.7%
A*–B
91.8%
Sources
Thinking about St Swithun's School?
We help families with school choice, entrance preparation, applications and interviews.
Figures compiled by Scholar Gateway from school information. Please check with us before you rely on them.