Astor Secondary School
Academy converter · sixth form · 732 pupils
72% stayed in education · Attainment 8 27.9
Academy converter
Chatham & Clarendon Grammar School
- Pupils on roll
- 1,334of 1,600 places
- Free school meals
- 17.4%
- Year 11 cohort 2025
- 192
- Ofsted
- Inspected, 24 September 2025Read the Ofsted report
Results below include those reported under the school’s previous registrations: Clarendon House Grammar School (URN 136385, until 1 December 2013); Chatham House Grammar School for Boys (URN 118934, until 1 January 2011).
What the data says
Of the 238 pupils who finished Year 11 at Chatham & Clarendon Grammar School in 2023, 77% stayed on in Chatham & Clarendon Grammar School’s own sixth form (Kent average 56%), 16% went to a further education college and 2% started an apprenticeship.
Among the 240 students who left the sixth form in 2023, 60% went to university (Kent 39%, England 37%), and 17% of level 3 students progressed to one of the most selective universities, against 19% nationally.
GCSE results in 2025 were well above the national picture: Attainment 8 of 64.0 against 46.1 across England and 46.7 in Kent, with 85% of pupils getting grade 5 or above in both English and maths (England 45%) — as a selective grammar school, Chatham & Clarendon Grammar School admits pupils by test at 11, which drives these figures.
Spanish is unusually popular at GCSE: 57% of the year group took it, against 19% of pupils across England.
Where pupils went after Year 11
Destinations of the 2023 Year 11 leavers, measured the following year: the share in a sustained place for at least two terms. Compared with all state-funded schools in Kent and England.
School sixth formSixth form collegeFurther education collegeOther educationApprenticeshipEmploymentNo sustained destination
| Measure | This school | Kent | England |
|---|---|---|---|
| Pupils in the cohort | 238 | 17,954 | 607,348 |
| Any sustained destination | 96% | 93% | 92% |
| Stayed in education | 94% | 88% | 86% |
| — school sixth form | 77% | 56% | 34% |
| — sixth form college | 0% | — | 13% |
| — further education college | 16% | 28% | 37% |
| — other education | 1% | 4% | 2% |
| Apprenticeship | 2% | 3% | 3% |
| Employment | — | 2% | 3% |
| No sustained destination | 3% | 5% | 6% |
| Destination unknown | — | 3% | 3% |
Where students went after sixth form
Destinations of students who finished 16–18 study in 2023, measured the following year.
University (higher education)Further educationOther educationApprenticeshipEmploymentNo sustained destination
| Measure | This school | Kent | England |
|---|---|---|---|
| Students in the cohort | 240 | 14,947 | 541,441 |
| Any sustained destination | 82% | 80% | 79% |
| University (higher education) | 60% | 39% | 37% |
| — most selective universities (top third), of level 3 students | 17% | 20% | 19% |
| Further education | 2% | 4% | 5% |
| Apprenticeship | 5% | 6% | 7% |
| Employment | 15% | 30% | 28% |
| No sustained destination | 11% | 15% | 16% |
GCSE results 2025
| Measure | This school | Kent | England |
|---|---|---|---|
| Attainment 8 (average points per pupil) | 64.0 | 46.7 | 46.1 |
| Grade 5 or above in English and maths | 85% | 47% | 45% |
| Grade 4 or above in English and maths | 97% | 65% | 65% |
| Entered the English Baccalaureate subjects | 76% | 47% | 41% |
| EBacc average point score | 6.09 | 4.18 | 4.09 |
| Disadvantaged pupils in the cohort | 10% | 25% | 28% |
| Attainment 8 — disadvantaged pupils | 55.1 | 32.2 | 34.9 |
| Attainment 8 — other pupils | 65.0 | 51.5 | 50.4 |
| Pupils with high prior attainment (Key Stage 2) | — | — | — |
| English as an additional language | 12% | 12% | 19% |
Progress 8 is not available for 2025 and 2026: these cohorts had no Key Stage 2 tests in 2020 and 2021, so there is no baseline. Attainment 8 shows results without taking pupils’ starting points into account.
Subjects taken at GCSE
Entries in 2025 as a share of the Year 11 cohort, and the share of entries graded 7–9 and 4–9, compared with all entries in England.
| Subject | Entries | Share of cohort | England | Grades 7–9 | England | Grades 4–9 |
|---|---|---|---|---|---|---|
| English Language | 191 | 99% | 89% | 39% | 20% | 94% |
| Mathematics | 191 | 99% | 88% | 47% | 22% | 99% |
| English Literature | 189 | 98% | 86% | 37% | 21% | 96% |
| Combined Science | 143 | 74% | 65% | 33% | 9% | 98% |
| Geography | 117 | 61% | 41% | 61% | 25% | 98% |
| Spanish | 110 | 57% | 19% | 40% | 27% | 82% |
| French | 91 | 47% | 18% | 49% | 29% | 91% |
| Business Studies | 86 | 45% | 18% | 43% | 20% | 97% |
| Religious Studies | 72 | 38% | 31% | 36% | 32% | 92% |
| Physical Education | 56 | 29% | 11% | 38% | 24% | 91% |
| History | 51 | 27% | 41% | 47% | 26% | 86% |
| Chemistry | 46 | 24% | 23% | 85% | 47% | 100% |
| Physics | 46 | 24% | 23% | 83% | 46% | 100% |
| Biology | 46 | 24% | 23% | 91% | 45% | 100% |
| Computer Science | 40 | 21% | 13% | 53% | 30% | 90% |
| Art and Design | 36 | 19% | 7% | 39% | 24% | 81% |
| Drama | 31 | 16% | 7% | 42% | 27% | 94% |
| Design and Technology | 22 | 11% | 11% | 55% | 23% | 95% |
| Food Preparation and Nutrition | 21 | 11% | 8% | 33% | 21% | 86% |
| Music | 9 | 5% | 5% | 44% | 33% | 100% |
| Turkish | 3 | 2% | 0% | — | 71% | — |
| Citizenship Studies | 1 | 1% | 3% | — | 19% | — |
| Polish | 1 | 1% | 1% | — | 84% | — |
| Italian | 1 | 1% | 0% | — | 53% | — |
| Bengali | 1 | 1% | 0% | — | 35% | — |
| Russian | 1 | 1% | 0% | — | 87% | — |
Technical awards and other Key Stage 4 qualifications
| Subject | Entries | Share of cohort | England |
|---|---|---|---|
| Personal Health | 1 | 0% | — |
A levels and other level 3 courses
| Measure | This school | Kent | England |
|---|---|---|---|
| Students at the end of 16–18 study | 480 | — | — |
| — of whom A level students | 225 | 7,794 | 261,341 |
| Average A level grade | B- | C+ | B- |
| Average points per A level entry | 36.44 | 34.87 | 35.00 |
| Average grade, best 3 A levels | B- | B- | B- |
| AAB or better with two facilitating subjects | 16% | 17% | 18% |
| Average grade, applied general courses | — | — | — |
| Average grade, T levels | — | — | — |
A level subjects
Entries as a share of A level students, compared with the share across England.
| Subject | Entries | Share of cohort | England |
|---|---|---|---|
| Sociology | 55 | 24% | 13% |
| Psychology | 54 | 24% | 23% |
| Economics | 54 | 24% | 13% |
| Mathematics | 51 | 23% | 31% |
| Geography | 41 | 18% | 10% |
| Religious Studies | 35 | 16% | 4% |
| Chemistry | 34 | 15% | 17% |
| Biology | 32 | 14% | 20% |
| English Literature | 32 | 14% | 11% |
| Physics | 31 | 14% | 12% |
| History | 24 | 11% | 13% |
| Business Studies | 24 | 11% | 13% |
| Media Studies | 21 | 9% | 4% |
| Politics | 19 | 8% | 6% |
| Film Studies | 18 | 8% | 2% |
| Spanish | 14 | 6% | 2% |
| Further Mathematics | 12 | 5% | 5% |
| French | 12 | 5% | 1% |
| Drama | 12 | 5% | 2% |
| Computer Science | 10 | 4% | 5% |
| Music Technology | 8 | 4% | 0% |
| Art and Design | 8 | 4% | 1% |
| Turkish | — | — | 0% |
| Polish | — | — | 0% |
| Product Design | — | — | 2% |
| Music | — | — | 0% |
Applied, technical and other level 3 courses
| Subject | Qualification | Entries | Share of cohort | England |
|---|---|---|---|---|
| Study Skills | Extended Project (Diploma) | 75 | 33% | — |
| Health Studies | OCR Cambridge Technical Extended Certificate at Level 3 | 21 | 9% | — |
| Business Studies | BTEC National Extended Certificate L3 - Band F - P-D* | 20 | 9% | — |
| Sports Studies | OCR Cambridge Technical Extended Certificate at Level 3 | 16 | 7% | — |
| Tourism | BTEC National Extended Certificate L3 - Band F - P-D* | 15 | 7% | — |
| Sports Studies | OCR Cambridge Technical Diploma at Level 3 | 8 | 4% | — |
| Computer Architecture / Systems | BTEC National Extended Certificate L3 - Band F - P-D* | 6 | 3% | — |
| Business Studies | BTEC Level 3 National Certificate (Band D) | — | — | — |
| Further Mathematics | GCE AS level (All) | — | — | — |
| Music | GCE AS level (All) | — | — | — |
| Further Mathematics | GCE AS level (Not continued to A2) | — | — | — |
| Music | GCE AS level (Not continued to A2) | — | — | — |
| Health Studies | OCR Cambridge Technical Certificate at Level 3 | — | — | — |
Other secondary schools in Kent
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Barton Court Grammar School
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Bennett Memorial Diocesan School
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Borden Grammar School
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Brockhill Park Performing Arts College
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Sources: Department for Education school and college performance tables 2024/2025 (Key Stage 4 and 16–18 results, subject entries, destination measures for 2023 leavers); Get Information About Schools register as at 19 September 2026; Ofsted management information as at 31 August 2026. Small numbers are suppressed by DfE and shown as “—”. How to read these figures.