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Sir Joseph Williamson's Mathematical School
Medway·Secondary·South East·Academy converter·ME1 3EL
URN: 136662OutstandingOfsted published 18 May 2023
69.5
Attainment 8
National avg ≈ 46.4 · 2024/2025
+0.90
Progress 8
2023/2024 · CI: [0.70, 1.09]
96.3%
5+ Eng & Maths
Grade 5+ in both · 2024/2025
98.6%
EBacc entry
% entering EBacc · 2024/2025
42.3
A level APS
Average points per entry · 2024/2025
Decision summary
This summary combines published school data and is designed to help you decide what to check next. It does not guarantee a school place or replace official admissions guidance.
Academic outcomesVery strong academic outcomes
Attainment 8 of 69.5 is well above the national average of around 46. This reflects strong GCSE outcomes across the standard subject basket.
- Attainment 8:
- 69.5
- 5+ Eng & Maths:
- 96%
- Academic year:
- 2024/2025
Pupil progressAbove-average progress
Pupils made above-average progress compared with similar pupils nationally. The confidence interval is entirely above zero, which is strong evidence of added value.
- Progress 8:
- +0.90
- Confidence interval:
- [0.70, 1.09]
Admissions realismAdmissions realism: not yet assessed
Admissions realism depends on your home postcode and the school's published allocation data. Enter your postcode on this page to get a more specific assessment, and always verify the latest policy on the school's official admissions page.
This is a selective school. Admission usually requires passing an entrance test. Check the school's admissions policy for test registration deadlines.
Watch-outs
- Selective admissions: an entrance test (usually the 11+ or equivalent) is required. Check registration and test dates well in advance.
Next actions
- Verify the school's official admissions policy
- Check entrance test registration dates
- Book an open day or school visit
- Add this school to your shortlist and compare with backup options
Performance over time
Attainment 8 over time
Progress 8 over time(not available 2024/25)
Grammar School Entry
Only source-backed entry information found on the school's own website is shown below.
Official links
Verified key dates
Registration opens
19 May 2025
Registration deadline
13 Jun 2025
Exam date
16 Sept 2025
Results date
15 Oct 2025
Verified exam details
Exam type
Medway Test
Exam provider
Medway Council
Entry requirements
Sir Joseph Williamson's Mathematical School is an 11 to 18 boys' grammar school that admits girls in the sixth form. Its reviewed admissions-arrangements page says entry is via the Medway Test and states a planned admission number of 203 for Year 7.
Exam dates and admissions evidence
The official Medway Council key-dates page for September 2026 entry says Medway Test registration opened at 9am on Monday 19 May 2025 and closed at 5pm on Friday 13 June 2025. Medway primary and junior school pupils sat the Medway Test on Tuesday 16 and Wednesday 17 September 2025, children from non-Medway schools sat it on Saturday 20 or Sunday 21 September 2025, and results were issued on Wednesday 15 October 2025. The reviewed SJWMS pages in this pass did not expose a dated open event for the next intake.
Verification
Data year
2026
Last verified
18 Apr 2026
Confidence
88%
Pages checked
4
Historical results
| Year | Pupils | Att8 | P8 | 5+ E&M | EBacc % | EBacc APS |
|---|---|---|---|---|---|---|
| 2024/2025 | 216 | 69.5 | — | 96.3% | 98.6% | 6.8 |
| 2023/2024 | 204 | 70.3 | +0.90 | 98.5% | 97.1% | 6.9 |
| 2022/2023 | 203 | 70.4 | +0.85 | 100.0% | 99.0% | 6.9 |
| 2021/2022 | 215 | 70.6 | +0.91 | 98.0% | 99.0% | 7.0 |
Nearby and similar schools
Other secondary schools in Medway for local comparison.
The Rochester Grammar School
Ofsted GoodAttainment 8 68.4Progress 8 +0.67
Compare with Sir Joseph Williamson's Mathematical SchoolFort Pitt Grammar School
Ofsted OutstandingAttainment 8 65.9Progress 8 +0.64
Compare with Sir Joseph Williamson's Mathematical SchoolRainham Mark Grammar School
Ofsted GoodAttainment 8 62.7Progress 8 +0.28
Compare with Sir Joseph Williamson's Mathematical SchoolHolcombe Grammar School
Attainment 8 62.4Progress 8 +0.15
Compare with Sir Joseph Williamson's Mathematical SchoolChatham Grammar
Attainment 8 61.8Progress 8 +0.36
Compare with Sir Joseph Williamson's Mathematical SchoolSchool information
| URN | 136662 |
| Local authority | Medway |
| Region | South East |
| Phase | Secondary |
| Type | Academy converter |
| Gender of entry | Boys |
| Age range | 11-18 |
| Headteacher | Headteacher Eliot Hodges |
| Trust | LEIGH ACADEMIES TRUST |
| Admissions | Selective |
| Religious character | None |
| Postcode | ME1 3EL |
| Latest pupils | 216 |
| FSM eligible | 10.3% |
Contact and identifiers
Maidstone Road, Rochester, Kent, ME1 3EL
http://www.sjwms.org.ukView local authority page1634844008| DfE number | 4530 |
| UKPRN | 10033431 |
| Opened | 1 Apr 2011 |
| GIAS updated | 5 Mar 2026 |
Data sources and freshness
| Official record updated | 5 Mar 2026 |
| Latest KS4 year | 2024/2025 |
| Latest KS2 year | — |
| Ofsted published | 18 May 2023 |
Latest Ofsted inspection
Outstanding
View Ofsted report
| Quality of education | Outstanding |
| Behaviour and attitudes | Outstanding |
| Personal development | Outstanding |
| Leadership and management | Outstanding |
| Safeguarding | Effective |
| Inspection type | S5 Inspection |
| Category of concern | — |
| Inspection date | 21 Mar 2023 |
| Publication date | 18 May 2023 |