Apply to Chislehurst and Sidcup Grammar School, in plain English.
Chislehurst and Sidcup Grammar uses the Bexley 11+ Selection Test — not the Kent test. This guide covers how to register, the six criteria that decide who gets a place (including 12 Pupil Premium reserved spots and the Top 180 guarantee), and what to do if your child misses out.
The three things to know first.
If you read nothing else on this page, read these.
The Bexley test — not the Kent 11+.
Chislehurst and Sidcup Grammar uses the Bexley Selection TestBexley 11+A two-paper test of verbal reasoning, comprehension, non-verbal reasoning and maths reasoning. Administered by Bexley LA in September. run by Bexley LA — a completely separate process from the Kent PESE. Register directly with Bexley LA (not the school) by 31 March 2026.
Top 180 scorers get a guaranteed place at their preferred Bexley grammar.
The 180 children with the highest age-standardised scores across all Bexley grammar applicants are guaranteed a place at their preferred school. If your child scores in the top 180, they effectively choose which Bexley grammar to attend.
Send the PP SIF by 31 October if claiming Pupil Premium.
12 places are reserved for Pupil Premium-eligible children. To access them, return the Supplementary Form for Pupil PremiumPP SIFThe school's form to verify Pupil Premium eligibility. Must be returned with supporting documentary evidence by 31 October. to the school by 31 October 2026 with supporting documentary evidence.
Four steps across the year.
If more children pass than there are places, these 6 criteria decide.
Only children deemed selective by Bexley LA are eligible. Within that group, the following order applies. Tap any criterion to see the exact wording.
In plain English: Children currently or previously in council care get top priority, regardless of score or address.
What the document says: Highest priority will be given to looked-after children and all previously looked-after children who apply for a place at the school.
In plain English: 12 places are reserved for Pupil Premium-eligible children who are deemed selective. Within this group, places go to children living closest to the school. Return the PP SIF to the school with documentary supporting evidence by 31 October 2026.
What the document says: Up to 12 places are reserved for children who are eligible for receipt of Pupil Premium Grant funding at the time of application, and who are deemed selective, in rank order of distance from the school. Documentary supporting evidence must be provided and the Supplementary Form for Pupil Premium Information returned to the school by 31 October in the year of application.
In plain English: The 180 children with the highest scores across all Bexley grammar applicants get a guaranteed place at their preferred Bexley grammar school. The exact cut-off score varies each year. If your child is in the top 180, they effectively choose which Bexley grammar to attend.
What the document says: Those children identified as achieving one of the highest 180 standardised scores in the Bexley selection test. All children who take the Bexley selection test are ranked in order of their standardised scores. From this ranking exercise, the 180 children with the highest scores are guaranteed a place at their preferred grammar school within Bexley LA.
In plain English: If your child will have a brother, sister, half- or step-sibling at this school in Years 7–12 at the time of application, they get priority here. Unusually, this includes sixth-form siblings — some schools only count Years 7–11.
What the document says: Those children with a brother, sister or step/half brother or sister living at the same address who are currently attending Chislehurst and Sidcup Grammar School in Years 7–12 at the time of application.
In plain English: If a parent is a permanent employee who has worked at Chislehurst and Sidcup Grammar for at least two years at the time of application, their child gets priority here. Both conditions — permanent employment and two-year tenure — must be met.
What the document says: Chislehurst and Sidcup Grammar gives priority to children of permanent staff where the member of staff has been employed at the school for two or more years at the time at which the application was made.
In plain English: Any other child who passed the Bexley test, ranked by straight-line distance from home to the entrance on Hurst Road. The closer you live, the better your chance.
What the document says: Children will be admitted on the basis of proximity to the school measured in a straight line from the home address, with priority given to children living nearest to the school. Distance measured by the LA's computerised system from the gate of the home address to the entrance of the school in Hurst Road.
Joining Year 12 from outside.
Chislehurst and Sidcup Grammar recruits external students into Year 12 each September, with at least 80 external places available.
Academic requirements
You need at least 7 GCSEs at grades 9–5, with an average point score of 6.5 from your best 7 subjects, including English and Maths at grade 5 or above. Individual A-level subject requirements also apply.
How to apply
At least 80 external places are available for September 2027 entry. Apply directly to the school. Contact the admissions office for the current application form and subject-specific grade requirements.
Visit csgrammar.com for current deadlines.
Straight line to the Hurst Road entrance.
For criterion 6, distance is measured in a straight line from the gate of your home address to the entrance of the school in Hurst Road, using the local authority's computerised measuring system. Road distance and walking time are not used.
Home address is taken as the child's permanent address at National Offer Day — the address at which the child lives with the main carer. Proof of residency will be required. If parents live at different addresses, the home for admissions purposes is where the child spends the majority of the school week.
See the catchment on the GrammarBound mapTwo criterion-6 children ranked by distance.
Both children passed the Bexley test but are not in the top 180 and have no PP, sibling, or staff priority. Both fall into criterion 6 and are ranked by straight-line distance to the Hurst Road entrance. Child A at 1.1 miles ranks above Child B at 3.2 miles.
You have two routes, and you can use both.
Waiting list
The waiting list is maintained until at least 31 December of the school year of admission and re-ranked each time a new name is added, using the same six criteria. Only children deemed selective can be on the waiting list.
Request via Chislehurst and Sidcup Grammar School directly.
Appeal
Contact the school's Admissions Officer to request an Appeal Form. Appeals are heard by an independent School Appeals Panel.
Appealing does not affect your waiting-list position.