Colchester Royal Grammar School vs St Mary's School for Girls
A head-to-head comparison of two schools in East of England, England, 607 m apart, using official English 2025 data. The better value in each row is highlighted.
Colchester Royal Grammar School
Colchester · Academy secondary · Ages 11–18
1,073 students
St Mary's School for Girls
Colchester · Independent all-through · Ages 2–17
424 students
| Measure | Colchester Royal Grammar School Colchester, East of England | St Mary's School for Girls Colchester, East of England |
|---|---|---|
| Success Index (England) | 99 Top 5% | 96 Top 5% |
| Region rank | #2 of 460 | #14 of 460 |
| National rank | #4 of 4,090 | #101 of 4,090 |
| Sector | Academy | Independent |
| Type | Secondary | All-through |
| Year range | Ages 11–18 | Ages 2–17 |
| Students | 1,073 | 424 |
| Pupils on roll | 1,073 | 424 |
| Free school meals | 4.7% | – |
| Capacity filled | 138.1% | 70.7% |
| KS2 expected standard (RWM) | – | – |
| KS2 higher standard (RWM) | – | – |
| KS2 reading progress | – | – |
| KS2 writing progress | – | – |
| KS2 maths progress | – | – |
| Attainment 8 | 82.1 | 66.5 |
| Progress 8 | – | – |
| Grade 5+ English & maths | 100% | 82.4% |
| Grade 4+ English & maths | 100% | 100% |
| EBacc average points | 7.85 | 6.26 |
| A level points per entry | 51.3 | – |
| town | Colchester | Colchester |
| region | East of England | East of England |
| Website | www.crgs.co.uk | www.stmaryscolchester.org.uk |
The verdict
- •Colchester Royal Grammar School scores higher on the Success Index (England) (99.4 vs 95.5).
- •Colchester Royal Grammar School is the larger school with 1,073 students compared with 424.
- •Colchester Royal Grammar School is a academy school while St Mary's School for Girls is a independent school, so fees and admission rules differ.
- •Colchester Royal Grammar School is boys and St Mary's School for Girls is girls.
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 Colchester Royal Grammar School better than St Mary's School for Girls?
On the Success Index (England), Colchester Royal Grammar School ranks higher (99.4 vs 95.5 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 Colchester Royal Grammar School and St Mary's School for Girls?
About 607 m in a straight line, between Colchester and Colchester in East of England.
Which has the better Pupils on roll?
Colchester Royal Grammar School: 1,073. St Mary's School for Girls: 424. Number of pupils in the latest school census.
How do Colchester Royal Grammar School and St Mary's School for Girls rank in East of England?
Colchester Royal Grammar School is 2nd of 460 and St Mary's School for Girls is 14th of 460 among secondary schools in East of England on the 2025 Success Index (England).