Chislehurst and Sidcup Grammar School
Secondary · Sidcup · DA15 9AG
Earlier grade, confirmed by a later ungraded inspection
Ofsted's most recent (ungraded) visit confirmed the school remains Good. Ungraded inspections do not award a new grade.
Inspected 14 December 2022
Read the Ofsted report ↗At a glance
1,561 pupils · 100% of 1,344 capacity
- School type
- Academy converter
- Age range
- 11–18
- Gender
- Mixed
- Admissions
- Selective
- Free school meals
- 2% of pupils
- English as additional language
- 10.9% of pupils
- SEN support
- 0.5% of pupils
- EHC plan
- 0.5% of pupils
- Sixth form
- Yes
- Website
- http://www.csgrammar.com/
- URN
- 137423
Admissions demand: Year 7 entry, September 2026
1.62 first-choice applications per place211 places offered · 341 first-choice applications · heavily oversubscribed
First-choice applications per place, by entry year
Applications and offers on national offer day, DfE. A ratio above 1.00 means more families named this school first choice than there were places.
GCSE results (2024/2025)
189 pupils at the end of key stage 4 in 2024/2025
Progress 8 is suspended nationally for 2024/25 and 2025/26. These cohorts sat no key stage 2 tests (COVID), so there is no baseline to measure progress from.
A-level results (2024/2025)
Source: DfE performance tables 2024/2025. “Suppressed” means the DfE withholds figures for very small cohorts.
Attendance (2025/26 autumn term)
Autumn-term absence, DfE pupil absence data. Lower is better.
Staffing
Full-time-equivalent, 2025/26.
Teacher retention (2024/25)
92% of teachers stayed at the school the following year · 3% moved to another state school · 6% left the state-funded sector
School Workforce Census, DfE. The ratio counts full-time-equivalent qualified teachers; retention follows teachers in post one November to the next. Open Government Licence v3.0.
Spending per pupil
Total expenditure ÷ pupils, academy finance return (DfE Schools Financial Benchmarking, latest year). Higher spending is not a measure of quality. It often reflects greater pupil need or a smaller school. Open Government Licence v3.0.
Where pupils go after GCSEs
Where students go after sixth form
Destinations measured the year after leaving, latest DfE destination measures release.
Inspection history since 2015
- 13 December 2022: School remains Good
- 19 September 2017: Yes - improving (good)
Ofsted management information. Ungraded and monitoring visits do not award a new grade. How the two inspection systems work.