Sir William Borlase's Grammar School
Marlow, Buckinghamshire, South East · SL7 2BR
An Ofsted rating of Outstanding across every category, from quality of education to sixth form, places Sir William Borlase's Grammar School among the most highly regarded state schools in Buckinghamshire. This large mixed grammar in Marlow has around 1,205 pupils on roll, comfortably above its official capacity of 1,085, which speaks to sustained demand for places. With 150 places at 11+ and entry through the competitive Buckinghamshire Grammar Schools consortium, admission is selective and sought after. The relatively low proportion of pupils on free school meals (2.7%) reflects the affluent area it serves.
1,205
Pupils
Outstanding
Ofsted
150
Places (PAN)
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Open in Google Maps ↗Overview & data
- Gender
- Mixed
- Type
- state grammar school
- Pupils
- 1,205
- Pupil:teacher ratio
- 19.6
- Location
- Marlow, Buckinghamshire, South East
- Website
- www.swbgs.com
Entrance & admissions
- Consortium
- The Buckinghamshire Grammar Schools
- Exam board
- GL Assessment
- Subjects tested
- Maths, Non-Verbal Reasoning, Verbal Reasoning
- Places (PAN)
- 150
- Entry age
- 11
Key dates· 2027 entry
Registration opens
1 May 2026
Registration closes
2 June 2026
Exam dateNext
10 September 2026
Application deadline
31 October 2026
Offers date
1 March 2027
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Latest results
Attainment 8
72.4
National average 46.9
GCSE grade 5+ (English & Maths)
97%
National average 47%
Teaching & academics
Results here are exceptional by any measure. The average Attainment 8 score of 72.4 sits far above the national average of 46.9, and an impressive 97% of pupils secure grade 5 or above in English and Maths, against a national figure of 47%. With a pupil-to-teacher ratio of about 19.6 and an Outstanding judgement for sixth form, the academic environment is both demanding and well supported.
Learning support & SEN
- SEN support
- 5.48%
- EHC plans
- 0.5%
- English as additional language
- 11.4%
- Free school meals
- 2.7%
Ethos & heritage
- Boarding
- No
Inspection reports
- Ofsted overall
- Outstanding
- Quality of education
- Outstanding
- Behaviour & attitudes
- Outstanding
- Last inspected
- 1 May 2024
The last word
A high-performing, selective grammar that consistently delivers outstanding outcomes. Families confident their child will thrive under genuine academic pressure will find much to admire.
The Passmate verdict
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Sir William Borlase's Grammar School 11+: frequently asked questions
Where is Sir William Borlase's Grammar School located?
Sir William Borlase's Grammar School is located at West Street, Marlow, SL7 2BR.
What type of school is Sir William Borlase's Grammar School?
Sir William Borlase's Grammar School is a state grammar school in South East.
What subjects does Sir William Borlase's Grammar School test in the 11+?
Sir William Borlase's Grammar School tests Maths, Non-Verbal Reasoning and Verbal Reasoning at 11+.
Which exam board does Sir William Borlase's Grammar School use for the 11+?
Sir William Borlase's Grammar School's 11+ uses GL Assessment.
When is the Sir William Borlase's Grammar School 11+ exam?
For the 2027 entry, the Sir William Borlase's Grammar School 11+ exam is on 10 September 2026.
How do I apply to Sir William Borlase's Grammar School?
For 2027 entry, registration opens on 1 May 2026, registration closes on 2 June 2026 and the application deadline is 31 October 2026.
When are Sir William Borlase's Grammar School 11+ offers released?
For 2027 entry, Sir William Borlase's Grammar School releases offers on 1 March 2027.
Which consortium does Sir William Borlase's Grammar School belong to?
Sir William Borlase's Grammar School is part of the The Buckinghamshire Grammar Schools consortium.
How many places does Sir William Borlase's Grammar School offer?
Sir William Borlase's Grammar School has a published admission number of 150 places.
How many pupils attend Sir William Borlase's Grammar School?
Sir William Borlase's Grammar School has approximately 1,205 pupils on roll.
What is Sir William Borlase's Grammar School's Ofsted rating?
Sir William Borlase's Grammar School was rated "Outstanding" by Ofsted at its inspection on 1 May 2024.
Compiled from public data. Last checked June 2026.