St Mary's Catholic Primary School, Isleworth
#510 of 1,720 primary schools in London
#2955 of 15,697 nationally
About St Mary's Catholic Primary School, Isleworth
St Mary's Catholic Primary School, Isleworth is a local authority primary located in Isleworth, in the Hounslow local authority of London, England. It caters for Ages 3–11. In 2025 it enrolled 399 students. Community, voluntary-aided, voluntary-controlled and foundation schools maintained by the local authority; free to attend.
Its Success Index (England) is 75.2 out of 100, placing it in the top 25% of primary schools in England and 510th of 1,720 ranked primary schools in London. Its strongest component is ks2: reading, writing & maths expected standard (80th percentile), and its weakest is ks2: higher standard (71th percentile).
Other published figures: pupils on roll 399; capacity filled 95%.
There are 13 schools in Isleworth; St Mary's Catholic Primary School, Isleworth ranks 4th of 13 scored schools there.
Success Index (England) breakdown
Each component is a percentile against primary schools across England.
- KS2: reading, writing & maths expected standard (35%)76%
- KS2: higher standard (20%)11%
- KS2: reading progress (10%)–
- KS2: maths progress (10%)–
- Progress 8 (20%)–
- Attainment 8 (30%)–
- Grade 5+ in English & maths (15%)–
- A level points per entry (10%)–
- Community advantage (fewer pupils on free school meals) (15%)13.1%
The Success Index (England) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for St Mary's Catholic Primary School, Isleworth by the official sources.
- Pupils on roll
- 399
- Number of pupils in the latest school census.
- Free school meals
- 13.1%
- Percentage of pupils eligible for free school meals.
- Capacity filled
- 95%
- Pupils on roll as a share of the school's reported capacity.
- KS2 expected standard (RWM)
- 76%
- Share of pupils meeting the expected standard in reading, writing and maths.
- KS2 higher standard (RWM)
- 11%
- Share of pupils reaching the higher standard in reading, writing and maths.
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Schools near St Mary's Catholic Primary School, Isleworth
Closest schools by straight-line distance, with their Success Index (England).
The Blue School CofE Primary
Isleworth · Local authority primary · Ages 3–11
431 students · 148 m away
Gumley House RC Convent School, FCJ
Isleworth · Academy secondary · Ages 11–18
1,013 students · 224 m away
Worple Primary School
Isleworth · Local authority primary · Ages 3–11
189 students · 452 m away
Isleworth Town Primary School
Isleworth · Local authority primary · Ages 3–11
727 students · 490 m away
The Smallberry Green Primary School
Isleworth · Local authority primary · Ages 3–11
407 students · 699 m away
The Green School for Boys
Isleworth · Academy secondary · Ages 11–18
721 students · 972 m away
Marlborough Primary School
Isleworth · Local authority primary · Ages 3–11
514 students · 1.1 km away
The Green School for Girls
Isleworth · Academy secondary · Ages 11–18
872 students · 1.1 km away
St Stephen's C E Primary School
Twickenham · Local authority primary · Ages 4–11
417 students · 1.4 km away
Ivybridge Primary School
Isleworth · Local authority primary · Ages 3–11
136 students · 1.5 km away
Similar schools
Local authority primary schools in London with a comparable Pupils on roll.
Queensbridge Primary School
London · Local authority primary · Ages 4–11
398 students
John Stainer Community Primary School
London · Local authority primary · Ages 3–11
400 students
St John's and St Clement's Church of England Primary School
London · Local authority primary · Ages 5–11
400 students
Mayflower Primary School
London · Local authority primary · Ages 3–11
400 students
Furzedown Primary School
London · Local authority primary · Ages 3–11
400 students
Hotham Primary School
London · Local authority primary · Ages 3–11
400 students
Frequently asked questions
Is St Mary's Catholic Primary School, Isleworth a good school?
St Mary's Catholic Primary School, Isleworth has a Success Index (England) of 75.2 out of 100 (Top 25% of primary schools in England) and ranks #510 of 1,720 in London. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does St Mary's Catholic Primary School, Isleworth rank in London?
St Mary's Catholic Primary School, Isleworth ranks #510 of 1,720 primary schools in London and #2955 of 15,697 nationally on the Success Index (England) (2025 data).
How many students attend St Mary's Catholic Primary School, Isleworth?
St Mary's Catholic Primary School, Isleworth had 399 students in 2025.
Is St Mary's Catholic Primary School, Isleworth a primary school or a secondary school?
St Mary's Catholic Primary School, Isleworth is classified as a primary covering Ages 3–11. It is a local authority school.
What other schools are near St Mary's Catholic Primary School, Isleworth?
There are 10 schools within 15 km of St Mary's Catholic Primary School, Isleworth; they are listed on this page with their Success Index (England) and distance, and can be compared side by side.