Chislehurst and Sidcup Grammar School
Chislehurst and Sidcup Grammar School is a mixed grammar school in Sidcup with 192 Year 7 places, taking children through the Bexley Selection Test. The pass mark is fixed once the results are in; after pupil premium places, Bexley’s 180 highest scorers, siblings and staff children, places go by distance, which reached 3.086 miles on National Offer Day 2026.
At a glance
- Where
- Sidcup, Greater London (Bexley)
- Takes
- Mixed
- Year 7 places
- 192
- Applicants
- 1,439 for 2026 entry, about 7.5 for each place. This counts Bexley Council’s count of every preference naming the school, not first preferences.
Applicants figures aren’t counted the same way at every school, so they don’t compare from one school to another.
Admissions
The test
The Bexley Selection Test, run by the London Borough of Bexley with papers from Quest Assessments: two multiple-choice papers of about 50 minutes each, covering verbal ability and English comprehension, numerical reasoning and non-verbal reasoning.
What qualifies
Children must be deemed selective: a total weighted age-standardised score (average 200) at or above the pass mark, which is fixed once the results are in, after discussion with the selection panel Bexley Council convenes, and is not published as a number. For 2026 entry, 2,070 of the 5,866 children who sat (35%) were deemed selective.
Who gets priority
After children whose EHC plan names the school: looked-after and previously looked-after children; up to 12 places for Pupil Premium children (free school meals now or in the last 6 years), by distance, with a supplementary form; children with one of Bexley's highest 180 scores; siblings in Years 7 to 12; children of staff employed permanently for 2 or more years; then straight-line distance to the Hurst Road entrance, with ties going to the higher score, then random allocation. The last place on National Offer Day 2026 went at 3.086 miles.
Registering
Online with the London Borough of Bexley from 1 March to midnight on 31 March 2026, with no late registrations and no appeal. The test was sat between 2 and 10 September 2026 at primary schools acting as test centres, or 7 to 10 September 2026 at the four grammar schools, with results emailed from 4pm on Friday 2 October 2026; families then name the school on their home council's Common Application Form by 31 October 2026.
Open events
Open mornings on Friday 9, Thursday 15 and Monday 19 October 2026 (sessions at 8:45am and 9:35am), plus small group tours with a Headteacher Q&A from 12 to 21 October; tickets were released from 2 October 2026, once the test results were out.
Good to know
A mixed grammar school with a mixed sixth form taking at least 100 external Year 12 students (up to 5 places for Pupil Premium students; an average point score of at least 6.5 across 8 GCSEs). The Pupil Premium supplementary form was due by 31 October 2026. Children not deemed selective can still name the school and appeal, but the school says none of its 148 Year 7 appeals from 2020 to 2024 was upheld. The applicants figure is Bexley Council's count of all preferences naming the school for 2026 entry, not first preferences.
Not confirmed yet
- The selective score for September 2027 entry is not published as a number.
- Bexley Council publishes total preferences per school (1,439 for 2026 entry), not first preferences or offers.
Check these on the official page: chislehurstsid.reactfiles.co.uk/uploads/document/Admission-Policy-2027-28-1.pdf
The 11+ in Bexley
The papers, registration, test dates, results and how qualifying works for every school there.
With Exam Prep, Thena sets practice papers in your child’s test’s style and goes over every mistake with them on her board: £49 a month with the Solo plan.
More on the 11+
Sources
Every fact here comes from the official pages below. Admissions rules change each year, so check them there before you rely on them.
- chislehurstsid.reactfiles.co.uk/uploads/document/Admission-Policy-2027-28-1.pdf
- csgrammar.com/admissions/admissions-year-7
- csgrammar.com/admissions/open-days-y7-entry
- chislehurstsid.reactfiles.co.uk/uploads/asset_image/2_2148.jpg
- bexley.gov.uk/services/schools-and-education/secondary-schools/admission-secondary-schools-27-28/secondary-schools-bexley
- bexley.gov.uk/services/schools-and-education/secondary-schools/admission-secondary-schools-27-28/before-applying-online-secondary-school
- bexley.gov.uk/services/schools-and-education/selection-tests/register-secondary-selection-test
- bexley.gov.uk/services/schools-and-education/selection-tests/about-test
- bexley.gov.uk/services/schools-and-education/secondary-schools/how-bexley-decide-secondary-school-places
Checked 2 November 2026.
Practice in the style of their test
Thena sets practice papers like the real ones, marks them straight away, then goes over each mistake with your child on her board, out loud.
Try 3 lessons free