# Chislehurst and Sidcup Grammar School

Chislehurst and Sidcup Grammar School is a secondary school in Bexley, for pupils aged 11 to 18.

It had 1,561 pupils at the school census in January 2026.

Secondary school. Code E137423. [Bexley](https://openindex.co.uk/bexley)

- Phase: Secondary
- Type: Academy converter
- Ages: 11 to 18
- Pupils: 1,561
- Council: Bexley
- URN: 137423

## Latest Ofsted outcome

School remains Good, December 2022
- Latest ungraded inspection: School remains Good, 14 December 2022
Edition: Latest inspections as at 30 September 2026
Outcomes as Ofsted published them. Report cards (from November 2025) give no overall grade, and grades under different frameworks cannot be compared.

## Results

Source: Department for Education school performance tables (Open Government Licence).

In 2025/26, the average Attainment 8 score at Chislehurst and Sidcup Grammar School was 75.3, against 51.0 in Bexley and 46.2 in England.
97.5% 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 | Bexley | England |
| --- | --- | --- | --- |
| Average Attainment 8 score | 75.3 | 51.0 | 46.2 |
| Grade 5 or above in English and maths | 97.5% | 55.4% | 46.3% |
| Grade 4 or above in English and maths | 99% | 71.3% | 64.8% |
| Pupils at the end of KS4 | 203 | – | – |

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

Distances are in a straight line. Admissions and catchments are set by councils and schools.

- [Holy Trinity Lamorbey Church of England School](https://openindex.co.uk/school/holy-trinity-lamorbey-church-of-england-school-e142229): 380 m. Primary. Good (overall), October 2023. 52% met the expected standard at KS2 (2024/25)
- [Birkbeck Primary School](https://openindex.co.uk/school/birkbeck-primary-school-e101426): 450 m. Primary. Good (overall), December 2023. 85% met the expected standard at KS2 (2024/25)
- [Chatsworth Infant School](https://openindex.co.uk/school/chatsworth-infant-school-e143085): 510 m. Primary. Improved significantly, January 2025
- [Burnt Oak Junior School](https://openindex.co.uk/school/burnt-oak-junior-school-e141976): 520 m. Primary. School remains Outstanding, June 2024. 76% met the expected standard at KS2 (2024/25)
- [Hurstmere School](https://openindex.co.uk/school/hurstmere-school-e151382): 550 m. Secondary. Requires improvement (overall), September 2022, before the school changed. Attainment 8 of 42.4 (2025/26, provisional)
- [Marlborough School](https://openindex.co.uk/school/marlborough-school-e101487): 710 m. Special. Improved significantly, June 2025

## Sources and further information

- [Schools: methods, licences and inspection sources](https://openindex.co.uk/sources/schools)
- [Get Information about Schools](https://get-information-schools.service.gov.uk/Establishments/Establishment/Details/137423)
- [Ofsted reports](https://reports.ofsted.gov.uk/provider/21/137423)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/school/chislehurst-and-sidcup-grammar-school-e137423, or to one figure with its anchor, https://openindex.co.uk/school/chislehurst-and-sidcup-grammar-school-e137423#sc-results.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.10. The HTML page: https://openindex.co.uk/school/chislehurst-and-sidcup-grammar-school-e137423