St Mary's Catholic Primary School, Isleworth vs The Green School for Boys
A head-to-head comparison of two schools in London, England, 972 m apart, using official English 2025 data. The better value in each row is highlighted.
St Mary's Catholic Primary School, Isleworth
Isleworth · Local authority primary · Ages 3–11
399 students
The Green School for Boys
Isleworth · Academy secondary · Ages 11–18
721 students
| Measure | St Mary's Catholic Primary School, Isleworth Isleworth, London | The Green School for Boys Isleworth, London |
|---|---|---|
| Success Index (England) | 75 Top 25% | 48 Top 50% |
| Region rank | #510 of 1,720 | #393 of 640 |
| National rank | #2955 of 15,697 | #2080 of 4,090 |
| Sector | Local authority | Academy |
| Type | Primary | Secondary |
| Year range | Ages 3–11 | Ages 11–18 |
| Students | 399 | 721 |
| Pupils on roll | 399 | 721 |
| Free school meals | 13.1% | 35.4% |
| Capacity filled | 95% | 57.2% |
| KS2 expected standard (RWM) | 76% | – |
| KS2 higher standard (RWM) | 11% | – |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | – | 47.1 |
| Progress 8 | – | – |
| Grade 5+ English & maths | – | 45% |
| Grade 4+ English & maths | – | 66.4% |
| EBacc average points | – | 4.18 |
| A level points per entry | – | 29.1 |
| town | Isleworth | Isleworth |
| region | London | London |
| Website | www.smi.hounslow.sch.uk | tgsboys.com/ |
The verdict
- •St Mary's Catholic Primary School, Isleworth scores higher on the Success Index (England) (75.2 vs 47.9).
- •The Green School for Boys is the larger school with 721 students compared with 399.
- •St Mary's Catholic Primary School, Isleworth is a local authority school while The Green School for Boys is a academy school, so fees and admission rules differ.
- •St Mary's Catholic Primary School, Isleworth is co-educational and The Green School for Boys 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 St Mary's Catholic Primary School, Isleworth better than The Green School for Boys?
On the Success Index (England), St Mary's Catholic Primary School, Isleworth ranks higher (75.2 vs 47.9 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 St Mary's Catholic Primary School, Isleworth and The Green School for Boys?
About 972 m in a straight line, between Isleworth and Isleworth in London.
Which has the better Pupils on roll?
St Mary's Catholic Primary School, Isleworth: 399. The Green School for Boys: 721. Number of pupils in the latest school census.
How do St Mary's Catholic Primary School, Isleworth and The Green School for Boys rank in London?
St Mary's Catholic Primary School, Isleworth is 510th of 1,720 and The Green School for Boys is 393rd of 640 among primary schools in London on the 2025 Success Index (England).