St Mary's School for Girls vs Colchester Royal Grammar School
Side-by-side comparison of key school data
St Mary's School for Girls
Colchester
Colchester Royal Grammar School
Colchester
Overview
Phase
All-through
Secondary
Type
Other independent school
Academy converter
Age Range
2–17
11–18
Gender
Girls
Boys
Religious Character
None
Christian
Admissions
Non-selective
Selective
Local Authority
Essex
Essex
Pupils & Capacity
Pupils
424
1073
Capacity
600
777
Occupancy
71%
138%
FSM %
-
4.7%
Nursery
Sixth Form
Boarding
Ofsted
Overall Rating
-
-
Quality of Education
-
Outstanding
Behaviour & Attitudes
-
Good
Personal Development
-
Good
Leadership & Management
-
Outstanding
Last Inspected
-
Apr 2026
Performance (2026)
Progress 8
-
-
Attainment 8
60.9
80.9
GCSE Eng+Maths 5+
73.2%
98.4%
KS2 Reading
-
-
KS2 Maths
-
-
KS2 Writing
-
-
A-Level Performance (2024/25)
Average Grade
-
A
Points Per Entry
-
51.3
Best 3 A-Levels
-
A+
AAB+ %
-
78%
Value Added
-
Above average
A-Level Students
-
202
Retention
-
100%
A-Level Subjects
Subjects offered
0
15
Top subjects
Mathematics (314)
Mathematics (276)
Chemistry (184)
Physics (148)
Mathematics (Further) (140)
Economics (134)
Biology (130)
Chemistry (126)