UK Schools
Chislehurst and Sidcup Grammar School
Chislehurst and Sidcup Grammar School is a mixed secondary academy in Sidcup, London Borough of Bexley, teaching 1,561 pupils aged 11 to 18. Its last Ofsted inspection in December 2022 found the school remains Good. In 2024–2025, GCSE Attainment 8 was 75.6 (England 46.1). The 2025–2026 school year runs from 2 September 2025 to 16 July 2026.
Ofsted inspection
The latest published Ofsted judgement for Chislehurst and Sidcup Grammar School.
Term dates & holidays 2025–2026
Autumn, spring and summer terms, half-terms, INSET days and bank holidays for Chislehurst and Sidcup Grammar School.
- 2 Autumn Term – First Day of Term
- 24–31 Autumn Half Term
- 19 Autumn Term – Last Day of Term
- 22–31 Christmas Holiday
- 1–2 Christmas Holiday
- 5 Spring Term – First Day of Term
- 16–20 Spring Half Term
- 27 Spring Term – Last Day of Term
- 30–31 Easter Holiday
- 1–10 Easter Holiday
- 13 Summer Term – First Day of Term
- 4 Early May Bank Holiday
- 25–29 Summer Half Term
- 25 Spring Bank Holiday
- 16 Summer Term – Last Day of Term
- 21–31 Summer Holiday
- 1–31 Summer Holiday
Key dates (2025–2026)
- Autumn Term – First Day of Term Sep 2, 2025 Term
- Autumn Half Term Oct 24, 2025 - Oct 31, 2025 Holiday
- Autumn Term – Last Day of Term Dec 19, 2025 Term
- Christmas Holiday Dec 22, 2025 - Jan 2, 2026 Holiday
- Spring Term – First Day of Term Jan 5, 2026 Term
- Spring Half Term Feb 16, 2026 - Feb 20, 2026 Holiday
- Spring Term – Last Day of Term Mar 27, 2026 Term
- Easter Holiday Mar 30, 2026 - Apr 10, 2026 Holiday
- Summer Term – First Day of Term Apr 13, 2026 Term
- Early May Bank Holiday May 4, 2026 Holiday
- Summer Half Term May 25, 2026 - May 29, 2026 Holiday
- Spring Bank Holiday May 25, 2026 Holiday
- Summer Term – Last Day of Term Jul 16, 2026 Term
- Summer Holiday Jul 21, 2026 - Aug 31, 2026 Holiday
Exam results & performance
The measures that carry the most signal. Open a section to compare Chislehurst and Sidcup Grammar School with London Borough of Bexley and England.
Key stage 4 (GCSE) 75.6 Attainment 8 score
Year 11 results across eight qualifications, including English and maths.
This school London Borough of Bexley England
16 to 18 (A level & sixth form) 41.22 A level average point score
Results for students finishing post-16 study.
This school London Borough of Bexley England
Attendance 4.9% Persistently absent pupils
Absence across the whole school year.
This school London Borough of Bexley England
What pupils do after GCSEs 98% In education, apprenticeship or work
Still in education, an apprenticeship or work a year after key stage 4.
This school London Borough of Bexley England
What students do after 16 to 18 study 91% In education, apprenticeship or work
Destinations the year after finishing post-16 study.
This school London Borough of Bexley England
About this data source & caveats
Progress 8 is not published for 2024–2025. This year group missed their key stage 2 tests in 2020, so there is no baseline to measure progress from.
Attendance comparisons are pupil-weighted averages we calculate from every school’s published absence figure — the DfE absence file has no local authority or England rows of its own.
We show the headline measures only. Threshold and curriculum-policy figures — grade 4+ in English and maths, EBacc entry and points, the per-subject key stage 2 breakdown, academic and applied splits at 16 to 18 — reflect admissions and curriculum choices more than school quality, so they are left to GOV.UK. Progress measures matter most because they compare pupils with others who started at the same level; attainment on its own largely tracks a school’s intake.
Figures are the Department for Education’s official published results for Chislehurst and Sidcup Grammar School. Results are suppressed where too few pupils were entered. England figures are the average for state-funded schools. “Top x%” is this school’s position among all schools in England with a published figure for that measure — the DfE does not publish league table rankings.
Source: Compare school and college performance, Department for Education. Contains public sector information licensed under the Open Government Licence v3.0.
Location & catchment area
Indicative only. This is a nearest-school (Voronoi) estimate — the area closer to Chislehurst and Sidcup Grammar School than to any other secondary school. Real admissions depend on the school’s own policy (straight-line distance, siblings, faith, feeder schools and available places) and change each year. Always confirm with the school and local authority admissions team.