The school is pleased to be ranked 38/40 and 31st in the country in The Telegraph’s new education guide.
The Telegraph's comprehensive rankings have scored each secondary school across the country out of 40 based on a range of criteria, including GCSE data for the 2025/26 academic year, pupil destinations, class size and truancy.
It also considers the subjects on offer, how each school compares with others locally, and the development of pupils across their education between KS2 and GCSEs.
Chislehurst and Sidcup Grammar was given an "excellent" development score, an Attainment 8 score of 75.3 out of 90, and had more than 73 per cent of pupils achieving GCSE English and maths grades at 7 or higher this summer.
The school ranks ahead of all schools in Bexley and level with St Olave’s Grammar School with an overall scoring of 38/40.
The News Shopper has run features on the guide:
https://www.newsshopper.co.uk/news/26677012.bexley-secondary-schools-ranked-new-education-guide/