Blackfen School for Girls vs Chatsworth Infant 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.
Blackfen School for Girls
Sidcup · Academy secondary · Ages 11–18
1,324 students
Chatsworth Infant School
Sidcup · Academy primary · Ages 3–7
210 students
| Measure | Blackfen School for Girls Sidcup, London | Chatsworth Infant School Sidcup, London |
|---|---|---|
| Success Index (England) | 53 Top 50% | 100 Top 5% |
| Region rank | #357 of 640 | #3 of 1,720 |
| National rank | #1827 of 4,090 | #7 of 15,697 |
| Sector | Academy | Academy |
| Type | Secondary | Primary |
| Year range | Ages 11–18 | Ages 3–7 |
| Students | 1,324 | 210 |
| Pupils on roll | 1,324 | 210 |
| Free school meals | 16.4% | 1% |
| Capacity filled | 88.3% | 116.7% |
| KS2 expected standard (RWM) | – | – |
| KS2 higher standard (RWM) | – | – |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | 44.1 | – |
| Progress 8 | – | – |
| Grade 5+ English & maths | 38.6% | – |
| Grade 4+ English & maths | 61% | – |
| EBacc average points | 3.63 | – |
| A level points per entry | 34.0 | – |
| town | Sidcup | Sidcup |
| region | London | London |
| Website | www.blackfenschoolforgirls.co.uk | chatsworth.bexley.sch.uk/ |
The verdict
- •Chatsworth Infant School scores higher on the Success Index (England) (99.7 vs 52.9).
- •Blackfen School for Girls is the larger school with 1,324 students compared with 210.
- •Blackfen School for Girls is girls and Chatsworth Infant 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.
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 Blackfen School for Girls better than Chatsworth Infant School?
On the Success Index (England), Chatsworth Infant School ranks higher (99.7 vs 52.9 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 Blackfen School for Girls and Chatsworth Infant School?
About 1.1 km in a straight line, between Sidcup and Sidcup in London.
Which has the better Pupils on roll?
Blackfen School for Girls: 1,324. Chatsworth Infant School: 210. Number of pupils in the latest school census.
How do Blackfen School for Girls and Chatsworth Infant School rank in London?
Blackfen School for Girls is 357th of 640 and Chatsworth Infant School is 3rd of 1,720 among secondary schools in London on the 2025 Success Index (England).