SecondaryAcademyOpen

Sir Joseph Williamson's Mathematical School

Maidstone Road, Rochester, Kent, ME1 3EL · URN 136662

Public data summary

8.5

out of 10 · 26 data sources

Coverage 76% · Strong

Record

At a glance

Ofsted: Outstanding
Pupils: 106
Age range: 11–18
Gender: Boys
Capacity: 1,280
Local authority: Medway

Outcomes

Published performance

GCSE Progress 8: 0.90
GCSE Attainment 8: 70.3
A-level average: B+
Sustained education: 67.0%
University: 66.0%

Context

Attendance and community

Overall absence: 4.5%
Persistent absence: 8.6%
Free school meals: 9.6%
SEN support: 7.4%
English additional language: 14.1%

Resources

Workforce and funding

Pupil–teacher ratio: 19.9:1
Average class size: 22.8
Staff turnover: 10.2%

Official-data model

Data dimensions

Achievement

9.7

5 contributing signals

Progress

10.0

3 contributing signals

Attendance

8.5

6 contributing signals

Resources

7.0

4 contributing signals

Equity

8.4

3 contributing signals

Destinations

6.7

5 contributing signals

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School contact

Official website

01634844008

School records are retained from official public datasets and managed through the Y School admin. This atlas is a supporting layer, not the current Y School product. Last refreshed 02/06/2026.