Chislehurst and Sidcup Grammar School

About Chislehurst and Sidcup Grammar School

Chislehurst and Sidcup Grammar School is an academy converter in Sidcup, Bexley, England, for pupils aged 11–18. It has 1,517 pupils on roll. It is part of CHISLEHURST AND SIDCUP GRAMMAR SCHOOL. At GCSE, pupils achieved an average Attainment 8 score of 75.3 (2025/26). 3.7% of pupils are eligible for free school meals, and 12.1% have English as an additional language.

School Information

Local Authority

Bexley →

School Type

Academy converter

Phase

Secondary

Age Range

Ages 11–18

Gender

Mixed

Pupils / Capacity

1,517 / 1,344 (113%) · over capacity

Sixth Form

Has a sixth form

Religious Character

Does not apply

Admissions Policy

Selective

Who attends this school — useful context if you’re considering teaching here.

Source: DfE School Census, 2025/26, licensed under the Open Government Licence v3.0.

Official Department for Education results, pupil destinations and attendance.

Progress 8 isn’t published for this year group: their Key Stage 2 baseline (2021 SATs) was cancelled during the pandemic, so a progress measure can’t be calculated. GCSE figures are provisional and may be revised.

Source: Department for Education performance tables, 2025/26, licensed under the Open Government Licence v3.0. Some independent schools’ qualifications (e.g. IGCSEs) are not all reflected in these figures.

Staffing at this school, with the trend over recent years — useful if you’re considering working here.

Data for the 2024/25 academic year (trend lines show 3 years). Source: DfE School Workforce Census, licensed under the Open Government Licence v3.0. State-funded schools only.

How this school is funded and where the money goes — per pupil.

Source: DfE school finance returns (CFR for council-maintained schools, AAR for academies), 2024-25, licensed under the Open Government Licence v3.0. Per-pupil figures are calculated from total income/expenditure.

Contact Details

Address

Hurst Road, Sidcup, Bexley, DA15 9AG

Phone

02083026511

Headteacher

Nigel Walker

Website

http://www.csgrammar.com/

Academy Trust

Frequently asked questions

What type of school is Chislehurst and Sidcup Grammar School?

Chislehurst and Sidcup Grammar School is an academy converter in Sidcup, Bexley, England, for pupils aged 11–18.

How many pupils does Chislehurst and Sidcup Grammar School have?

Chislehurst and Sidcup Grammar School has 1,517 pupils on roll, according to Department for Education data.

How does Chislehurst and Sidcup Grammar School perform at GCSE?

Pupils at Chislehurst and Sidcup Grammar School achieved an average Attainment 8 score of 75.3 in 2025/26.

Is Chislehurst and Sidcup Grammar School part of an academy trust?

Yes — Chislehurst and Sidcup Grammar School is part of CHISLEHURST AND SIDCUP GRAMMAR SCHOOL.

Where is Chislehurst and Sidcup Grammar School?

Chislehurst and Sidcup Grammar School is located at Hurst Road, Sidcup, Bexley, DA15 9AG.