Delce Academy vs Sir Joseph Williamson's Mathematical School
A head-to-head comparison of two schools in South East, England, 444 m apart, using official English 2025 data. The better value in each row is highlighted.
Delce Academy
Rochester · Academy primary · Ages 5–11
287 students
Sir Joseph Williamson's Mathematical School
Rochester · Academy secondary · Ages 11–18
1,555 students
| Measure | Delce Academy Rochester, South East | Sir Joseph Williamson's Mathematical School Rochester, South East |
|---|---|---|
| Success Index (England) | 38 Lower 50% | 95 Top 5% |
| Region rank | #1770 of 2,471 | #38 of 679 |
| National rank | #10560 of 15,697 | #125 of 4,090 |
| Sector | Academy | Academy |
| Type | Primary | Secondary |
| Year range | Ages 5–11 | Ages 11–18 |
| Students | 287 | 1,555 |
| Pupils on roll | 287 | 1,555 |
| Free school meals | 53.7% | 11.7% |
| Capacity filled | 79.7% | 121.5% |
| KS2 expected standard (RWM) | 60% | – |
| KS2 higher standard (RWM) | 9% | – |
| 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.delceacademy.co.uk | www.sjwms.org.uk |
The verdict
- •Sir Joseph Williamson's Mathematical School scores higher on the Success Index (England) (94.5 vs 38.1).
- •Sir Joseph Williamson's Mathematical School is the larger school with 1,555 students compared with 287.
- •Delce Academy is co-educational and Sir Joseph Williamson's Mathematical School is boys.
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 Delce Academy better than Sir Joseph Williamson's Mathematical School?
On the Success Index (England), Sir Joseph Williamson's Mathematical School ranks higher (94.5 vs 38.1 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 Delce Academy and Sir Joseph Williamson's Mathematical School?
About 444 m in a straight line, between Rochester and Rochester in South East.
Which has the better Pupils on roll?
Delce Academy: 287. Sir Joseph Williamson's Mathematical School: 1,555. Number of pupils in the latest school census.
How do Delce Academy and Sir Joseph Williamson's Mathematical School rank in South East?
Delce Academy is 1770th of 2,471 and Sir Joseph Williamson's Mathematical School is 38th of 679 among primary schools in South East on the 2025 Success Index (England).