A selective co-educational grammar school in Sidcup, Greater London, serving ages 11-18 with a sixth form and around 1,517 pupils on roll.
Chislehurst and Sidcup Grammar School
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At a glance
Chislehurst and Sidcup Grammar School is a co-educational selective grammar in Sidcup, serving ages 11 to 18. The school describes its purpose in outward-looking terms: to educate inquiring, well-informed and compassionate young people who can take responsibility and influence the world around them. That purpose is matched by practical expectations around high academic standards, creativity, leadership, healthy lifestyles, self-discipline and respectful relationships.
Academically, CSGS presents itself through an 'Academic Excellence' area covering curriculum, subject information, homework and careers education, with a substantial sixth form as part of the same school community. The sixth-form pages highlight a study programme, university guidance and student destinations, while the main values page makes clear that the complementary curriculum matters alongside examination success. This is a large school, with around 1,517 pupils, so the sixth form and the co-educational character both shape the daily feel of the site.
The school-life menu is unusually useful for understanding the offer. CSGS signposts clubs and societies, creative and performing arts, sport, educational trips, personal development, Quest Lectures, student leadership, the Marlborough School partnership, Duke of Edinburgh and school traditions. The library is a named part of the pupil experience, and the co-curricular evidence also includes debate, drama and sport as visible co-curricular routes. The result is a grammar school that presents intellectual life and participation as connected rather than separate strands.
Year 7 has 192 places and uses the Bexley selection system. The current Bexley test is supplied by Quest Assessments and is taken as two multiple-choice booklets of about 50 minutes each, covering verbal ability and English comprehension, numerical reasoning and non-verbal reasoning; the weighting is 50% verbal and English, 25% maths, and 25% non-verbal reasoning. Only pupils who reach the Bexley selective standard can be considered. Oversubscription then gives priority to looked-after and previously looked-after selective pupils, up to 12 Pupil Premium selective pupils, pupils in the top 180 Bexley scores, siblings, staff children and then distance. Published measures show Ofsted Good from 2022, +0.82 Progress 8, 98.9% grade 5+ in English and maths, and 27.2% AAB or better at A level.
Latest 2024/25 KS4 measures compared with Bexley and England.
Recent published Attainment 8 scores compared with Bexley and England.
Latest 2024/25 Year 11 destination mix compared with Bexley and England.
January 2025 school census
Whole-school roll of 1,517 pupils; 1,496 had a recorded ethnic group.
| Recorded group | Share | Category | Pupils |
|---|---|---|---|
| White British | 51.5% | White | 782 |
| Any other White background | 11.1% | White | 168 |
| African | 8.7% | Black | 132 |
| Indian | 5.1% | Asian | 78 |
| Chinese | 4.3% | Asian | 65 |
| Any other mixed background | 4.2% | Mixed | 63 |
| Any other Asian background | 4% | Asian | 61 |
| White and Asian | 3.8% | Mixed | 57 |
| Unclassified | 1.4% | Unclassified | 21 |
| White and Black Caribbean | 1.3% | Mixed | 20 |
| White and Black African | 0.9% | Mixed | 14 |
| Bangladeshi | 0.9% | Asian | 13 |
| Any other ethnic group | 0.8% | Other | 12 |
| Pakistani | 0.7% | Asian | 11 |
| Any other Black background | 0.5% | Black | 8 |
| Caribbean | 0.5% | Black | 8 |
| Irish | 0.3% | White | 4 |
Chislehurst and Sidcup Grammar School participates in Bexley's coordinated admissions scheme. Only pupils who achieve the Bexley selective standard can be considered for a grammar place.
Chislehurst and Sidcup Grammar School does not operate a Year 7 catchment area. After the published priority groups, remaining selective applicants are ranked by straight-line distance from home to the school.
Looked after and previously looked after selective pupils
Selective looked after children and previously looked after children are prioritised first.
Up to 12 pupil premium selective pupils
Up to 12 selective pupils in receipt of Pupil Premium are prioritised next, ranked by distance from home to the school.
Selective pupils in the top 180 Bexley scores
The policy then prioritises selective applicants within the highest 180 Bexley aggregate scores who have named the school.
Siblings
Selective pupils with a sibling attending the school at the time of admission are considered next.
Children of permanent staff
Selective applicants with a parent or guardian employed permanently by the school under the published policy rules are prioritised next.
Other selective pupils by distance
Remaining selective applicants are ranked by straight-line distance from home to the school. If distance is tied for the final place, the higher test score is preferred and then random allocation is used if needed.
The current Bexley Selection Test is provided by Quest Assessments. It is multiple choice, runs as two booklets of about 50 minutes each, and weights verbal ability and English comprehension at 50% with numerical and non-verbal reasoning at 25% each.
Shared exam route
Chislehurst and Sidcup Grammar School uses the shared Bexley route. Use these common practice resources for the route, then check the full consortium guide for the complete set and current test guidance.
View all Bexley practice papersPaper 1
Verbal reasoning, Non-verbal reasoning, Maths, English
Paper 1
Quest Assessments runs the Bexley Selection Test as multiple-choice booklets covering verbal ability and English comprehension, numerical reasoning, and non-verbal reasoning.
Paper 2
Verbal reasoning, Non-verbal reasoning, Maths, English
Paper 2
The second booklet follows the same mixed-skills Bexley format and is completed on the same test session.
English, Maths, Verbal reasoning and Non-verbal reasoning are included in the published format.
Science is not listed in the current published format.
English
Maths
Verbal reasoning
Quest Assessments runs the Bexley Selection Test as multiple-choice booklets covering verbal ability and English comprehension, numerical reasoning, and non-verbal reasoning.
Non-verbal reasoning
Quest Assessments runs the Bexley Selection Test as multiple-choice booklets covering verbal ability and English comprehension, numerical reasoning, and non-verbal reasoning.
Science
Registration opens
Sunday 1 March 2026
PastRegistration closes
Tuesday 31 March 2026 at midnight
PastBexley primary-school test window
2 to 10 September 2026
Grammar-school centre test window
7 to 10 September 2026
Results issued
October 2026
CAF deadline
Saturday 31 October 2026
Read the admissions policy
Check the PAN of 192, the selective-eligibility rule, and the school's oversubscription order before registering for the Bexley test.
Open admissions policyRegister for the Bexley Selection Test
Families must register between 1 March 2026 and 31 March 2026 for September 2027 entry.
Open Bexley registration pageSit the Bexley test and await results
Bexley primary-school test sessions run from 2 to 10 September 2026 and grammar-school centres run from 7 to 10 September 2026. Results are due in October 2026.
Review test detailsSubmit your Common Application Form
Only pupils who have achieved the Bexley selective standard can be considered, so list the school on your CAF by 31 October 2026 if you want a place.
Open Year 7 admissions pageLatest official destinations data currently covers 2022/23 study leavers.
Recent trend
This follows the school's published overall GCSE score across the subjects pupils take. Higher is better.
| Year | This school | Grammar schools | England |
|---|---|---|---|
| 2021/22 | 75 | 74.2 | 49.4 |
| 2022/23 | 73 | 71.8 | 47.0 |
| 2023/24 | 76 | 72.1 | 46.7 |
| 2024/25 | 75.6 | 72.3 | 46.8 |
Recent trend
This follows the published average A-level result for the school's sixth form. Higher is better.
| Year | This school | Grammar schools | England |
|---|---|---|---|
| 2021/22 | A- average (45 points) | 44.0 points | 37.5 points |
| 2022/23 | B average (40.8 points) | 40.5 points | 33.7 points |
| 2023/24 | B average (41.5 points) | 41.3 points | 34.5 points |
| 2024/25 | B average (41.2 points) | 41.8 points | 35.0 points |
Recent trend
This follows the share of pupils moving into a sustained destination after Year 11, such as education, apprenticeships, or employment.
| Year | This school | Grammar schools | England |
|---|---|---|---|
| 2021/22 | 99% | 99.1% | 94.1% |
| 2022/23 | 99% | 98.9% | 93.9% |
| 2023/24 | 100% | 99.0% | 93.3% |
| 2024/25 | 98% | 98.7% | 91.8% |
Latest year breakdown
| In education | 98% |
|---|---|
| In apprenticeships | 1% |
| In employment | 0% |
Latest inspection: 14 December 2022
Local rivals appear first, followed by nearby alternatives where the journey and admissions route are still comparable.
Same Bexley area and similar co-ed selective route
Nearby London option with a similar admissions route
Closest comparable alternatives with a similar academic profile, so parents can weigh local fit and results together.
Similar Attainment 8 and Progress 8
Similar Attainment 8 and Progress 8
Similar Attainment 8 and Progress 8
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Related guides are still being added.
FAQ
Chislehurst and Sidcup Grammar School currently uses GL Assessment.
1. Read the admissions policy: Check the PAN of 192, the selective-eligibility rule, and the school's oversubscription order before registering for the Bexley test. 2. Register for the Bexley Selection Test: Families must register between 1 March 2026 and 31 March 2026 for September 2027 entry. 3. Sit the Bexley test and await results: Bexley primary-school test sessions run from 2 to 10 September 2026 and grammar-school centres run from 7 to 10 September 2026. Results are due in October 2026. 4. Submit your Common Application Form: Only pupils who have achieved the Bexley selective standard can be considered, so list the school on your CAF by 31 October 2026 if you want a place.
Registration opens: Sunday 1 March 2026. Registration closes: Tuesday 31 March 2026 at midnight. Bexley primary-school test window: 2 to 10 September 2026. Grammar-school centre test window: 7 to 10 September 2026. Results issued: October 2026. CAF deadline: Saturday 31 October 2026
Chislehurst and Sidcup Grammar School is currently rated Good following the latest published inspection dated 14 December 2022.