Bolder Academy vs Marlborough Primary School
A head-to-head comparison of two schools in London, England, 1.1 km apart, using official English 2025 data. The better value in each row is highlighted.
Bolder Academy
Isleworth · Academy secondary · Ages 11–18
909 students
Marlborough Primary School
Isleworth · Local authority primary · Ages 3–11
514 students
| Measure | Bolder Academy Isleworth, London | Marlborough Primary School Isleworth, London |
|---|---|---|
| Success Index (England) | 53 Top 50% | 81 Top 25% |
| Region rank | #360 of 640 | #338 of 1,720 |
| National rank | #1840 of 4,090 | #2042 of 15,697 |
| Sector | Academy | Local authority |
| Type | Secondary | Primary |
| Year range | Ages 11–18 | Ages 3–11 |
| Students | 909 | 514 |
| Pupils on roll | 909 | 514 |
| Free school meals | 28.9% | 17% |
| Capacity filled | 72.1% | 77.9% |
| KS2 expected standard (RWM) | – | 78% |
| KS2 higher standard (RWM) | – | 19% |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | 45.6 | – |
| Progress 8 | – | – |
| Grade 5+ English & maths | 40.8% | – |
| Grade 4+ English & maths | 61.5% | – |
| EBacc average points | 4.25 | – |
| A level points per entry | 37.1 | – |
| town | Isleworth | Isleworth |
| region | London | London |
| Website | www.bolderacademy.co.uk | www.marlboroughschool.net/ |
The verdict
- •Marlborough Primary School scores higher on the Success Index (England) (80.7 vs 52.6).
- •Bolder Academy is the larger school with 909 students compared with 514.
- •Bolder Academy is a academy school while Marlborough Primary School is a local authority school, so fees and admission rules differ.
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 Bolder Academy better than Marlborough Primary School?
On the Success Index (England), Marlborough Primary School ranks higher (80.7 vs 52.6 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 Bolder Academy and Marlborough Primary School?
About 1.1 km in a straight line, between Isleworth and Isleworth in London.
Which has the better Pupils on roll?
Bolder Academy: 909. Marlborough Primary School: 514. Number of pupils in the latest school census.
How do Bolder Academy and Marlborough Primary School rank in London?
Bolder Academy is 360th of 640 and Marlborough Primary School is 338th of 1,720 among secondary schools in London on the 2025 Success Index (England).