FavSchools
Grammar Schools

Sir Joseph Williamson's Mathematical School

Secondary

Sir Joseph Williamson's Mathematical School

Maidstone Road, Rochester, ME1 3EL

Academy converter
Boys
Pupils
1,528
Ages
11-18
FSM
10.3%
Attainment 8
69.4
Ofsted
Outstanding
Mar 2023

This is a grammar school

Entry is by the 11+ exam, sat in September of Year 6

Selection
Selective grammar
Exam system
GL Assessment

Admits by the 11+ exam; many grammars also use distance or catchment as a tie-breaker once the pass mark is met.

Register for the Medway Test with Medway Council. Children sit the test in September of Year 6.

Grammars in MedwayUnderstand the 11+How to apply

11+ details as of 2026-05. Always confirm with the local authority or consortium.

Exam Results

Official performance data from the Department for Education

GCSE Results (Secondary)

Key performance measures— 2024/25

Attainment 8
69.4
Progress 8?
N/A
9-7 Grades
55.6%
Basics 9-5
93.5%

Trend — Attainment 8 & Progress 8

Progress 8 not available for 2024/25 — DfE cannot calculate it because COVID-19 cancelled this cohort's KS2 SATs (the baseline). Expected to return in 2026/27.

Grade Distribution (%)

9–7% / 9–5% / 9–4% available from 2023/24; no grade breakdown for 2022/23

EBacc Measures

EBacc Entry
98.6%
EBacc APS
6.82
EBacc 9-5
79.2%
EBacc 9-4
88.9%
How to read Progress 8 vs Attainment 8Two numbers, two different stories. The 6-min explainer for parents.

A-Level Results (Post-16)

Key A-Level performance measures— 2024/25

APS per Entry
42.32
A*-A Grades
45.8%
A*-B Grades
74.7%
AAB+ %
27.6%

APS per Entry

National avgSelective avg

Grade Distribution (%)

A*-A% / A*-B% available from 2023/24; no grade breakdown for 2022/23

Based on 221 students entered

Community & Reviews

What parents say and who teaches here

Parent Reviews

Location & Nearby

Explore the area and compare alternatives

Data shown for guidance only · confirm details with the school before applying

About Sir Joseph Williamson's Mathematical School

Sir Joseph Williamson's Mathematical School is a secondary school in Rochester, Medway. Its latest Ofsted outcome is Outstanding (2023 inspection). Latest published results: GCSE 2024/25: Attainment 8 69.4. The school has around 1,528 pupils on roll. Use this page to explore performance trends, inspection history, admissions notes and neighbourhood context before applying.

Explore on mapLeague tablesCompare schoolsGrammar schools in Medway

Location: Maidstone Road, Rochester, ME1 3EL | More schools in Medway

Ofsted inspection history

Published Ofsted outcomes for Sir Joseph Williamson's Mathematical School, including earlier inspections linked to predecessor establishments where applicable.

  1. Mar 2023 — Outstanding
  2. Nov 2008 — Outstanding (predecessor: Sir Joseph Williamson's Mathematical School)

Official reports: Ofsted.gov.uk

Frequently asked questions about Sir Joseph Williamson's Mathematical School

What is Sir Joseph Williamson's Mathematical School's Ofsted rating?
Sir Joseph Williamson's Mathematical School received a Outstanding rating from Ofsted following its 2023 inspection.
What are Sir Joseph Williamson's Mathematical School's latest exam results?
Sir Joseph Williamson's Mathematical School: GCSE 2024/25: Attainment 8 69.4. Figures are from DfE-published performance tables.
Where is Sir Joseph Williamson's Mathematical School located?
Sir Joseph Williamson's Mathematical School is a secondary school in Rochester, Medway (ME1 3EL).
How many pupils attend Sir Joseph Williamson's Mathematical School?
Sir Joseph Williamson's Mathematical School has around 1,528 pupils on roll according to the latest school census data.
How can I compare Sir Joseph Williamson's Mathematical School with other schools?
View Sir Joseph Williamson's Mathematical School's full profile on FavSchools for multi-year results and Ofsted history, then use the comparison tool or interactive map to explore nearby alternatives in Medway.