Sir Joseph Williamson's Mathematical School vs St William of Perth Roman Catholic Primary School
A head-to-head comparison of two schools in South East, England, 392 m apart, using official English 2025 data. The better value in each row is highlighted.
Sir Joseph Williamson's Mathematical School
Rochester · Academy secondary · Ages 11–18
1,555 students
St William of Perth Roman Catholic Primary School
Rochester · Academy primary · Ages 4–11
211 students
| Measure | Sir Joseph Williamson's Mathematical School Rochester, South East | St William of Perth Roman Catholic Primary School Rochester, South East |
|---|---|---|
| Success Index (England) | 95 Top 5% | 77 Top 25% |
| Region rank | #38 of 679 | #507 of 2,471 |
| National rank | #125 of 4,090 | #2715 of 15,697 |
| Sector | Academy | Academy |
| Type | Secondary | Primary |
| Year range | Ages 11–18 | Ages 4–11 |
| Students | 1,555 | 211 |
| Pupils on roll | 1,555 | 211 |
| Free school meals | 11.7% | 11.4% |
| Capacity filled | 121.5% | 100.5% |
| KS2 expected standard (RWM) | – | – |
| KS2 higher standard (RWM) | – | – |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | 69.5 | – |
| Progress 8 | – | – |
| Grade 5+ English & maths | 93.5% | – |
| Grade 4+ English & maths | 97.2% | – |
| EBacc average points | 6.82 | – |
| A level points per entry | 42.3 | – |
| town | Rochester | Rochester |
| region | South East | South East |
| Website | www.sjwms.org.uk | www.stwilliamofperth.org.uk/ |
The verdict
- •Sir Joseph Williamson's Mathematical School scores higher on the Success Index (England) (94.5 vs 76.7).
- •Sir Joseph Williamson's Mathematical School is the larger school with 1,555 students compared with 211.
- •Sir Joseph Williamson's Mathematical School is boys and St William of Perth Roman Catholic Primary School is co-educational.
The Success Index (England) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
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Frequently asked questions
Is Sir Joseph Williamson's Mathematical School better than St William of Perth Roman Catholic Primary School?
On the Success Index (England), Sir Joseph Williamson's Mathematical School ranks higher (94.5 vs 76.7 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Sir Joseph Williamson's Mathematical School and St William of Perth Roman Catholic Primary School?
About 392 m in a straight line, between Rochester and Rochester in South East.
Which has the better Pupils on roll?
Sir Joseph Williamson's Mathematical School: 1,555. St William of Perth Roman Catholic Primary School: 211. Number of pupils in the latest school census.
How do Sir Joseph Williamson's Mathematical School and St William of Perth Roman Catholic Primary School rank in South East?
Sir Joseph Williamson's Mathematical School is 38th of 679 and St William of Perth Roman Catholic Primary School is 507th of 2,471 among secondary schools in South East on the 2025 Success Index (England).