Isleworth and Syon School for Boys
Secondary schoolIsleworth and Syon School for Boys is a secondary school in Hounslow, for pupils aged 11 to 18. It had 951 pupils at the school census in January 2026.
Ofsted
Latest inspections as at 30 September 2026Good (overall), November 2023
- Inspection
- Graded inspection, 14 November 2023
- Overall effectiveness
- Good
- Quality of education
- Good
- Behaviour and attitudes
- Good
- Personal development
- Good
- Leadership and management
- Good
Outcomes as Ofsted published them. Report cards (from November 2025) give no overall grade, and grades under different frameworks can’t be compared.
Results
Department for EducationIn 2025/26, the average Attainment 8 score at Isleworth and Syon School for Boys was 46.2, against 49.3 in Hounslow and 46.2 in England.
44.4% of its pupils got grade 5 or above in English and maths GCSEs (46.3% in England).
End of secondary school (KS4, GCSEs)
2025/26, provisional| Measure | This school | Hounslow | England |
|---|---|---|---|
| Average Attainment 8 score | 46.2 | 49.3 | 46.2 |
| Grade 5 or above in English and maths | 44.4% | 52.9% | 46.3% |
| Grade 4 or above in English and maths | 59.6% | 70.1% | 64.8% |
| Pupils at the end of KS4 | 171 | – | – |
- The 2025/26 figures are provisional. The Department for Education publishes revised ones later in the school year.
- Progress 8 cannot be worked out for 2025/26, because the KS2 tests that give the starting point were cancelled in 2020 and 2021.
- Results reflect the pupils a school admits as well as its teaching, and a year's results can move a lot in a small school.
Schools nearby
In a straight line- The Woodbridge Park Education ServicePupil referral and alternative provision. Good (overall), November 2023580 m
- West Thames CollegeSixth form and further education. Not in Ofsted's state-funded schools file. Attainment 8 of 0.6 (2025/26, provisional)600 m
- Ambitious CollegeSpecial. No outcome in Ofsted's file600 m
- Nishkam School West LondonAll-through. Outstanding (overall), January 2024. 95% met the expected standard at KS2 (2024/25)780 m
- Oaklands SchoolSpecial. Standards maintained, May 2025890 m
- Spring Grove Primary SchoolPrimary. Good (overall), June 2024. 73% met the expected standard at KS2 (2024/25)930 m
Admissions and catchments are set by councils and schools, which Open Index doesn’t map. Every school in Hounslow
Where these figures come from
- Schools: the school lists of the Department for Education, the Welsh Government and the Scottish Government, with Ofsted’s latest inspections for England.
- Results: the Department for Education’s school performance tables (Open Government Licence).