St Mary's Catholic Primary School, Isleworth vs The Smallberry Green Primary School
A head-to-head comparison of two primary schools in London, England, 699 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 Smallberry Green Primary School
Isleworth · Local authority primary · Ages 3–11
407 students
| Measure | St Mary's Catholic Primary School, Isleworth Isleworth, London | The Smallberry Green Primary School Isleworth, London |
|---|---|---|
| Success Index (England) | 75 Top 25% | 59 Top 50% |
| Region rank | #510 of 1,720 | #966 of 1,720 |
| National rank | #2955 of 15,697 | #6020 of 15,697 |
| Sector | Local authority | Local authority |
| Type | Primary | Primary |
| Year range | Ages 3–11 | Ages 3–11 |
| Students | 399 | 407 |
| Pupils on roll | 399 | 407 |
| Free school meals | 13.1% | 21% |
| Capacity filled | 95% | 91.5% |
| KS2 expected standard (RWM) | 76% | 78% |
| KS2 higher standard (RWM) | 11% | 2% |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | – | – |
| Progress 8 | – | – |
| Grade 5+ English & maths | – | – |
| Grade 4+ English & maths | – | – |
| EBacc average points | – | – |
| A level points per entry | – | – |
| town | Isleworth | Isleworth |
| region | London | London |
| Website | www.smi.hounslow.sch.uk | www.smallberrygreen.co.uk/ |
The verdict
- •St Mary's Catholic Primary School, Isleworth scores higher on the Success Index (England) (75.2 vs 59.2).
- •The Smallberry Green Primary School does better on ks2: reading, writing & maths expected standard (78% vs 76%).
- •St Mary's Catholic Primary School, Isleworth does better on ks2: higher standard (11% vs 2%).
- •The Smallberry Green Primary School is the larger school with 407 students compared with 399.
The Success Index (England) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
Is St Mary's Catholic Primary School, Isleworth better than The Smallberry Green Primary School?
On the Success Index (England), St Mary's Catholic Primary School, Isleworth ranks higher (75.2 vs 59.2 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 Smallberry Green Primary School?
About 699 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 Smallberry Green Primary School: 407. Number of pupils in the latest school census.
How do St Mary's Catholic Primary School, Isleworth and The Smallberry Green Primary School rank in London?
St Mary's Catholic Primary School, Isleworth is 510th of 1,720 and The Smallberry Green Primary School is 966th of 1,720 among primary schools in London on the 2025 Success Index (England).