Sir Joseph Williamson's Mathematical School
About Sir Joseph Williamson's Mathematical School
Sir Joseph Williamson's Mathematical School holds an Outstanding rating from Ofsted across every category in its most recent 2023 inspection, including quality of education, behaviour and attitudes, personal development, leadership and management, and sixth-form provision. The school’s Progress 8 score of 0.9 is the standout academic metric here, placing it well above average nationally and ranking it first out of 18 schools in Medway. This score means pupils at this boys’ grammar school make nearly a grade more progress per subject across eight GCSEs than the average student nationally. For context, the local authority average Progress 8 score is -0.1, so the gap is substantial. The school also achieves an Attainment 8 score of 70.3, and an EBacc average point score of 6.9, with 97.1% of pupils entered for the EBacc combination of subjects. In the South East region, it ranks 14th out of 461 schools on Progress 8, placing it in the top 4% nationally.
Key Details
The full report on this school
The inspection in plain English, admissions context, and how this school compares to nearby alternatives — all in one full school report.
- Ofsted inspection in plain EnglishStrengths, concerns and what inspectors flagged
- Parent View survey resultsWhat parents told Ofsted — when the school has 10+ responses
- Where Ofsted and parents disagreeGaps to probe + questions to ask at the open day
- Admissions & catchmentAdmission criteria, distance cutoffs (where the LA publishes them)
- Nearby schools comparedBackup options with Ofsted, demand and distance
- Attendance & behaviour dataPersistent absentees, suspensions and exclusions vs national
Ofsted Inspection Breakdown
21 Mar 2023Source: Ofsted, 18 May 2023. Ratings: 1=Outstanding, 2=Good, 3=Requires Improvement, 4=Inadequate.
Facilities
9Facilities may vary. Contact the school for current availability.
Extracurriculars
17Sports
Clubs & Activities
Activities may vary by term. Contact the school for current offerings.
SEND Support
Source: Department for Education, 2024/25. Support availability based on current student population.
School day
Teaching hours
08:40 – 15:10
Source: sjwms.org.uk. Extracted automatically — confirm with the school before relying on these times.
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Frequently Asked Questions About Sir Joseph Williamson's Mathematical School
Helpful Guides for Parents
Ofsted Ratings Explained
Understand the 4 Ofsted ratings and what they mean
Understanding Progress 8
Learn how Progress 8 measures pupil progress from primary to GCSE
SEN & EHCP: A Parent's Guide
Understanding SEN support, EHC Plans and your legal rights
Understanding School Catchment Areas
How admission distances work and tips for maximising your choices