Chislehurst and Sidcup Grammar School vs St Mary Magdalene Academy
A head-to-head comparison of two schools in London, England, 20 km apart, using official English 2025 data. The better value in each row is highlighted.
Chislehurst and Sidcup Grammar School
Sidcup · Academy secondary · Ages 11–18
1,561 students
St Mary Magdalene Academy
London · Academy all-through · Ages 4–19
1,561 students
| Measure | Chislehurst and Sidcup Grammar School Sidcup, London | St Mary Magdalene Academy London, London |
|---|---|---|
| Success Index (England) | 97 Top 5% | 81 Top 25% |
| Region rank | #16 of 640 | #123 of 640 |
| National rank | #52 of 4,090 | #576 of 4,090 |
| Sector | Academy | Academy |
| Type | Secondary | All-through |
| Year range | Ages 11–18 | Ages 4–19 |
| Students | 1,561 | 1,561 |
| Pupils on roll | 1,561 | 1,561 |
| Free school meals | 2% | 38.1% |
| Capacity filled | 116.1% | 114.8% |
| KS2 expected standard (RWM) | – | 77% |
| KS2 higher standard (RWM) | – | 30% |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | 75.6 | 59.3 |
| Progress 8 | – | – |
| Grade 5+ English & maths | 98.9% | 70.7% |
| Grade 4+ English & maths | 99.5% | 81.8% |
| EBacc average points | 7.47 | 5.55 |
| A level points per entry | 41.2 | 38.9 |
| town | Sidcup | London |
| region | London | London |
| Website | www.csgrammar.com/ | www.smmacademy.org |
The verdict
- •Chislehurst and Sidcup Grammar School scores higher on the Success Index (England) (97.1 vs 81.1).
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 Chislehurst and Sidcup Grammar School better than St Mary Magdalene Academy?
On the Success Index (England), Chislehurst and Sidcup Grammar School ranks higher (97.1 vs 81.1 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 Chislehurst and Sidcup Grammar School and St Mary Magdalene Academy?
About 20 km in a straight line, between Sidcup and London in London.
Which has the better Pupils on roll?
Chislehurst and Sidcup Grammar School: 1,561. St Mary Magdalene Academy: 1,561. Number of pupils in the latest school census.
How do Chislehurst and Sidcup Grammar School and St Mary Magdalene Academy rank in London?
Chislehurst and Sidcup Grammar School is 16th of 640 and St Mary Magdalene Academy is 123rd of 640 among secondary schools in London on the 2025 Success Index (England).