City of London School for Girls vs The John Lyon School
A head-to-head comparison of two all-through schools in London, England, 18 km apart, using official English 2025 data. The better value in each row is highlighted.
City of London School for Girls
London · Independent all-through · Ages 10–18
794 students
The John Lyon School
Harrow-on-the-Hill · Independent all-through · Ages 2–18
781 students
| Measure | City of London School for Girls London, London | The John Lyon School Harrow-on-the-Hill, London |
|---|---|---|
| Success Index (England) | 58 Top 50% | 18 Lower 50% |
| Region rank | #320 of 640 | #599 of 640 |
| National rank | #1581 of 4,090 | #3675 of 4,090 |
| Sector | Independent | Independent |
| Type | All-through | All-through |
| Year range | Ages 10–18 | Ages 2–18 |
| Students | 794 | 781 |
| Pupils on roll | 794 | 781 |
| Free school meals | – | – |
| Capacity filled | 92.3% | 86.8% |
| KS2 expected standard (RWM) | – | – |
| KS2 higher standard (RWM) | – | – |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | 49.7 | 13.7 |
| Progress 8 | – | – |
| Grade 5+ English & maths | 0% | 0% |
| Grade 4+ English & maths | 0% | 0% |
| EBacc average points | 3.09 | 0.82 |
| A level points per entry | 51.5 | 40.0 |
| town | London | Harrow-on-the-Hill |
| region | London | London |
| Website | www.clsg.org.uk | www.johnlyon.org |
The verdict
- •City of London School for Girls scores higher on the Success Index (England) (58.0 vs 18.1).
- •City of London School for Girls is the larger school with 794 students compared with 781.
- •City of London School for Girls is girls and The John Lyon 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.
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Frequently asked questions
Is City of London School for Girls better than The John Lyon School?
On the Success Index (England), City of London School for Girls ranks higher (58.0 vs 18.1 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 City of London School for Girls and The John Lyon School?
About 18 km in a straight line, between London and Harrow-on-the-Hill in London.
Which has the better Pupils on roll?
City of London School for Girls: 794. The John Lyon School: 781. Number of pupils in the latest school census.
How do City of London School for Girls and The John Lyon School rank in London?
City of London School for Girls is 320th of 640 and The John Lyon School is 599th of 640 among all-through schools in London on the 2025 Success Index (England).