Ashlyns School
Foundation school · sixth form · 1,561 pupils
94% stayed in education · Attainment 8 57.9
Academy converter
The John Warner School
- Pupils on roll
- 726of 1,192 places
- Free school meals
- 20.4%
- Year 11 cohort 2025
- 197
- Ofsted
- Inadequate, 11 October 2022Read the Ofsted report
Results below include those reported under the school’s previous registration: The John Warner School (URN 136607, until 31 December 2023).
What the data says
The Department for Education has not published where The John Warner School’s Year 11 leavers went next, so this page relies on the school’s results and subjects.
Food Preparation and Nutrition is unusually popular at GCSE: 43% of the year group took it, against 8% of pupils across England.
GCSE results in 2025 were below the national picture: Attainment 8 of 40.8 against 46.1 across England and 50.6 in Hertfordshire, with 33% of pupils getting grade 5 or above in both English and maths (England 45%).
A level grades average C-, well below the England average of B-; 0% of students achieved AAB or better including two facilitating subjects (England 18%). The largest A level subjects are Mathematics, Sociology and English Literature.
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 Hertfordshire and England.
The Department for Education has not published destination figures for this school (new school, small cohort or not a state-funded school).
Where students went after sixth form
Destinations of students who finished 16–18 study in 2023, measured the following year.
No published destinations for sixth-form leavers yet.
GCSE results 2025
| Measure | The John Warner School | Hertfordshire | England |
|---|---|---|---|
| Attainment 8 (average points per pupil) | 40.8 | 50.6 | 46.1 |
| Grade 5 or above in English and maths | 33% | 53% | 45% |
| Grade 4 or above in English and maths | 54% | 72% | 65% |
| Entered the English Baccalaureate subjects | 14% | 47% | 41% |
| EBacc average point score | 3.43 | 4.56 | 4.09 |
| Disadvantaged pupils in the cohort | 20% | 18% | 28% |
| Attainment 8 — disadvantaged pupils | 26.5 | 34.2 | 34.9 |
| Attainment 8 — other pupils | 44.4 | 54.1 | 50.4 |
| Pupils with high prior attainment (Key Stage 2) | — | — | — |
| English as an additional language | 10% | 16% | 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 | 197 | 100% | 89% | 13% | 20% | 61% |
| Mathematics | 197 | 100% | 88% | 10% | 22% | 60% |
| English Literature | 196 | 99% | 86% | 14% | 21% | 60% |
| Combined Science | 190 | 96% | 65% | 11% | 9% | 48% |
| Geography | 148 | 75% | 41% | 12% | 25% | 49% |
| Business Studies | 102 | 52% | 18% | 8% | 20% | 46% |
| Food Preparation and Nutrition | 85 | 43% | 8% | 14% | 21% | 71% |
| Design and Technology | 75 | 38% | 11% | 8% | 23% | 51% |
| History | 55 | 28% | 41% | 20% | 26% | 56% |
| Physical Education | 47 | 24% | 11% | 4% | 24% | 47% |
| Applied Engineering | 46 | 23% | 0% | 2% | 18% | 37% |
| Art and Design | 42 | 21% | 7% | 12% | 24% | 50% |
| Religious Studies | 33 | 17% | 31% | 21% | 32% | 52% |
| Drama | 18 | 9% | 7% | 17% | 27% | 50% |
| Music | 10 | 5% | 5% | 30% | 33% | 50% |
| Computer Science | 10 | 5% | 13% | 20% | 30% | 70% |
| German | 9 | 5% | 5% | 33% | 33% | 89% |
| French | 8 | 4% | 18% | 13% | 29% | 25% |
| Spanish | 8 | 4% | 19% | 13% | 27% | 38% |
| Chemistry | 4 | 2% | 23% | — | 47% | — |
| Biology | 4 | 2% | 23% | — | 45% | — |
| Physics | 4 | 2% | 23% | — | 46% | — |
| Turkish | 3 | 2% | 0% | — | 71% | — |
| Polish | 3 | 2% | 1% | — | 84% | — |
| Russian | 1 | 1% | 0% | — | 87% | — |
| Modern Greek | 1 | 1% | 0% | — | 33% | — |
| Italian | 1 | 1% | 0% | — | 53% | — |
Technical awards and other Key Stage 4 qualifications
| Subject | Entries | Share of cohort | England |
|---|---|---|---|
| Computer Appreciation / Introduction | 20 | 43% | — |
| Dance: General | 20 | 43% | — |
A levels and other level 3 courses
| Measure | The John Warner School | Hertfordshire | England |
|---|---|---|---|
| Students at the end of 16–18 study | 91 | — | — |
| — of whom A level students | 46 | 8,082 | 261,341 |
| Average A level grade | C- | B- | B- |
| Average points per A level entry | 26.88 | 36.82 | 35.00 |
| Average grade, best 3 A levels | C- | B- | B- |
| AAB or better with two facilitating subjects | 0% | 19% | 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 |
|---|---|---|---|
| Mathematics | 13 | 28% | 31% |
| Sociology | 11 | 24% | 13% |
| English Literature | 9 | 20% | 11% |
| Business Studies | 9 | 20% | 13% |
| Economics | 9 | 20% | 13% |
| Psychology | 8 | 17% | 23% |
| Philosophy | 6 | 13% | 1% |
| History | 6 | 13% | 13% |
| Physics | — | — | 12% |
| Polish | — | — | 0% |
| Product Design | — | — | 2% |
| Computer Science | — | — | 5% |
| Biology | — | — | 20% |
| Art and Design | — | — | 1% |
| Geography | — | — | 10% |
Applied, technical and other level 3 courses
| Subject | Qualification | Entries | Share of cohort | England |
|---|---|---|---|---|
| Finance / Accounting (General) | VRQ Level 3 | 32 | 70% | — |
| Business Studies | BTEC National Extended Certificate L3 - Band F - P-D* | 19 | 41% | — |
| Sports Studies | OCR Cambridge Technical Extended Certificate at Level 3 | 13 | 28% | — |
| Engineering Studies | BTEC National Extended Certificate L3 - Band F - P-D* | 12 | 26% | — |
| Nutrition / Diet | VRQ Level 3 | 9 | 20% | — |
| Study Skills | Extended Project (Diploma) | 7 | 15% | — |
| Mathematical Studies | Core Maths Qualifications at Level 3 | 6 | 13% | — |
| Multimedia | BTEC National Extended Certificate L3 - Band F - P-D* | — | — | — |
| Sports Studies | OCR Cambridge Technical Diploma at Level 3 | — | — | — |
Other secondary schools in Hertfordshire
Barclay Academy
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91% stayed in education · Attainment 8 49.5
Barnwell School
Foundation school · sixth form · 1,270 pupils
88% stayed in education · Attainment 8 41.5
Beaumont School
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Birchwood High School
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85% stayed in education · Attainment 8 46.1
Bishop's Hatfield Girls' School
Academy converter · sixth form · 942 pupils
97% stayed in education · Attainment 8 51.9
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.