Isleworth and Syon School for Boys

Isleworth and Syon School for Boys at a glance

Located in Isleworth, Hounslow, Isleworth and Syon School for Boys is a boys' secondary school, classified by the DfE as a converter academy. The school educates roughly 1,021 pupils aged 11 to 18. Ofsted judged the school to be 'Good' at its most recent inspection. In the most recent GCSE results, pupils achieved an average Attainment 8 score of 43.1, broadly in line with the national average of 46. That is down 5.1 points in its Attainment 8 score on the previous year. On our composite score, which combines the DfE attainment measures above, this places it in the lower half of secondary schools nationally.

38% of pupils achieved a grade 5 or above in both English and maths, below the national average of about 45%. 54% achieved a standard pass (grade 4+) in English and maths. Isleworth and Syon School for Boys was not oversubscribed for September 2026: all 82 families who put it first were offered a place. After Year 11, 91% of its leavers went on to education, an apprenticeship or work that they stayed in for at least two terms. Overall pupil absence was 7.8%. There are about 14.1 pupils per teacher. 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.