Sir Joseph Williamson's Mathematical School

Sir Joseph Williamson's Mathematical School at a glance

Located in Rochester, Medway, Sir Joseph Williamson's Mathematical School is a boys' secondary school, classified by the DfE as a converter academy. The school educates roughly 1,528 pupils aged 11 to 18. Ofsted judged the school to be 'Outstanding' at its most recent inspection. In the most recent GCSE results, pupils achieved an average Attainment 8 score of 69.5, well above the national average of 46. That is down 0.8 points in its Attainment 8 score on the previous year. On our composite score, which combines the DfE attainment measures above, this places it among the top 3% of secondary schools in England.

94% of pupils achieved a grade 5 or above in both English and maths, well above the national average of about 45%. 97% achieved a standard pass (grade 4+) in English and maths. Competition for places is real here - 58% of first-choice applicants were offered a Year 7 place for September 2026 (336 first choices for 201 places). After Year 11, 97% of its leavers went on to education, an apprenticeship or work that they stayed in for at least two terms. Overall pupil absence was 4.5%. There are about 20.3 pupils per teacher. Its intake is relatively advantaged, with around 11% of pupils eligible for free school meals in the last six years versus about 24% nationally. Given the recent dip in results, it may be worth asking the school what is behind the change and what is being done in response. This overview is generated automatically from the latest published DfE performance tables and Ofsted data; figures are rounded, and you can check the originals via the official links above.