St Mary's Catholic Primary School, Isleworth
South Street, Isleworth, TW7 7EE
- Phase
- Primary
- School type
- Voluntary aided school
- Ages
- 3 to 11
- Gender
- Mixed
- Religious character
- Roman Catholic
- Headteacher
- Mr F Marsh
- Diocese
- Archdiocese of Westminster
- Nursery provision
- Has Nursery Classes
- Constituency
- Brentford and Isleworth
- Setting
- Urban: Nearer to a major town or city
- Capacity
- 420
- Pupils on roll
- 399
- URN
- 102528
- Local authority
- Hounslow
- Website
- School website
- Telephone
- 02085607166
About this school
St Mary's Catholic Primary School, Isleworth is a Roman Catholic voluntary aided primary school in Isleworth. It teaches children aged 3 to 11 and has 399 pupils on roll.
Ofsted has inspected St Mary's Catholic Primary School, Isleworth, and its latest judgement is set out below. Where the Department for Education has published them, its results and pupil characteristics appear below. Seeing a school for yourself shows what no page can, so arrange a visit before you apply.
Ofsted judgement
Confirmed by a short inspection, not a full one
Ofsted's most recent visit was a short inspection on 29 June 2022, where inspectors confirmed the school remains Good. The school's last full inspection took place before September 2019, so its area grades are not part of Ofsted's current published data. Older reports are on the school's Ofsted page.
Exam results
Key stage 2 (end of primary school)
| Measure | 2022/23 | 2023/24 | 2024/25 |
|---|---|---|---|
| Pupils at the end of key stage 2 | 55 | 58 | 55 |
| Met the expected standard in reading, writing and maths | 65% | 86% | 76% |
| Reached the higher standard in reading, writing and maths | 15% | 7% | 11% |
| Expected standard in reading | 85% | 88% | 82% |
| Expected standard in maths | 78% | 95% | 91% |
| Expected standard in grammar, punctuation and spelling | 87% | 90% | 87% |
| Average scaled score in reading | 107.0 | 107.0 | 107.0 |
| Average scaled score in maths | 105.0 | 109.0 | 107.0 |
| Reading progress | +1.90 | - | - |
| Writing progress | +0.70 | - | - |
| Maths progress | +0.90 | - | - |
Progress measures ended nationally after the 2022/23 school year, when the key stage 1 assessments they were based on were stopped. Blank progress figures in later years are not missing school data.
Trends over time
How St Mary's Catholic Primary School, Isleworth has moved over recent years against the local and national picture. Every figure is shown in the table beneath its chart.
| Year | This school | Hounslow average | England average |
|---|---|---|---|
| 2022/23 | 65% | 60.8% | 57.9% |
| 2023/24 | 86% | 64.8% | 58.8% |
| 2024/25 | 76% | 64.6% | 60.3% |
Department for Education KS2 performance data, published school results.
| Year | This school | England average |
|---|---|---|
| 2022/23 | 5.5% | 6.8% |
| 2023/24 | 4.7% | 6.6% |
| 2024/25 | 4.9% | 6.2% |
Department for Education pupil absence data.
| Year | This school |
|---|---|
| 2022/23 | 424 |
| 2023/24 | 415 |
| 2024/25 | 393 |
School census, spring count each academic year.
How St Mary's Catholic Primary School, Isleworth compares
St Mary's Catholic Primary School, Isleworth ranked 18th of 47 primary schools in Hounslow for KS2 results in 2024/25. Its KS2 result was higher than 80% of England primary schools that published results in 2024/25. Its absence rate was lower than 61% of England schools in 2024/25.
| School | KS2 RWM (2024/25) | Absence | FSM (6 years) | Pupils | Distance |
|---|---|---|---|---|---|
| This school | 76% | 4.9% | 11.4% | 399 | — |
| The Blue School CofE Primary | 88% | 4% | 8.2% | 431 | 0.1 miles |
| Worple Primary School | 73% | 6.1% | 27.7% | 189 | 0.3 miles |
| Isleworth Town Primary School | 70% | 4.9% | 17.5% | 727 | 0.3 miles |
| The Smallberry Green Primary School | 78% | 6.4% | 25.5% | 407 | 0.4 miles |
| Marlborough Primary School | 78% | 6.5% | 17.6% | 514 | 0.7 miles |
Results reflect each school's cohort as much as its teaching, and free school meals share is context, not a judgement. Small gaps between neighbouring schools are rarely meaningful on their own.
School context
From the 2024/25 school census and absence figures.
- Free school meals (last 6 years)
- 11.44%
- English as an additional language
- 32.6%
- Overall absence
- 4.94%
- Persistent absence
- 12.65%
Location
Nearby schools
-
The Blue School CofE Primary0.1 miles
Primary · Isleworth
-
Worple Primary School0.3 miles
Primary · Isleworth
-
Isleworth Town Primary School0.3 miles
Primary · Isleworth
-
The Smallberry Green Primary School0.4 miles
Primary · Isleworth
-
Marlborough Primary School0.7 miles
Primary · Isleworth
Other schools in Isleworth
St Mary's Catholic Primary School, Isleworth ranks 4th of the 8 ranked primary schools in Isleworth.
- Isleworth Town Primary School Primary
- Ivybridge Primary School Primary
- Marlborough Primary School Primary
- Spring Grove Primary School Primary
- The Blue School CofE Primary Primary
- The Smallberry Green Primary School Primary
- Worple Primary School Primary
- Bolder Academy Secondary
- Gumley House RC Convent School, FCJ Secondary
- Isleworth and Syon School for Boys Secondary
- The Green School for Boys Secondary
- The Green School for Girls Secondary
Common questions
- What ages does St Mary's Catholic Primary School, Isleworth teach?
- St Mary's Catholic Primary School, Isleworth teaches children aged 3 to 11. It is a primary school in Isleworth.
- Who is the headteacher of St Mary's Catholic Primary School, Isleworth?
- The headteacher of St Mary's Catholic Primary School, Isleworth is Mr F Marsh, as recorded in the Department for Education's register of schools.
- Has St Mary's Catholic Primary School, Isleworth been inspected?
- Ofsted has inspected St Mary's Catholic Primary School, Isleworth, and its latest judgement is set out in the inspection section on this page, with the framework and the date it was made.
- How many pupils are at St Mary's Catholic Primary School, Isleworth?
- St Mary's Catholic Primary School, Isleworth has 399 pupils on roll, teaching children aged 3 to 11.
- Is St Mary's Catholic Primary School, Isleworth full?
- St Mary's Catholic Primary School, Isleworth has capacity for 420 pupils and 399 on roll (95%), so it is close to full. Places are allocated through the local authority's admissions process, so capacity alone does not tell you whether a place is available.
- Is St Mary's Catholic Primary School, Isleworth a faith school?
- Yes. St Mary's Catholic Primary School, Isleworth is designated Roman Catholic, in the Archdiocese of Westminster.
- Does St Mary's Catholic Primary School, Isleworth have a nursery?
- Yes. The schools register records St Mary's Catholic Primary School, Isleworth as having nursery classes.
- How have St Mary's Catholic Primary School, Isleworth's results changed over recent years?
- Its share of pupils reaching the expected standard in reading, writing and maths was 65% in 2022/23 and 76% in 2024/25. The year-by-year figures, alongside local and national averages, are charted in the trends section on this page.
- How does St Mary's Catholic Primary School, Isleworth compare with other schools in Hounslow?
- St Mary's Catholic Primary School, Isleworth ranked 18th of 47 primary schools in Hounslow for key stage 2 results. Its KS2 result was higher than 80% of England primary schools that published results in 2024/25. Its absence rate was lower than 61% of England schools in 2024/25. Results reflect each cohort as well as the school, so treat rankings as a starting point.
- What is St Mary's Catholic Primary School, Isleworth's absence rate?
- St Mary's Catholic Primary School, Isleworth's overall absence rate is 4.9% in the latest published census, at or below the England average of 6.2%.
- What are St Mary's Catholic Primary School, Isleworth's exam results?
- Where the Department for Education has published them, St Mary's Catholic Primary School, Isleworth's key stage results are shown in the results section on this page, with the last three years so you can see the trend rather than a single year.
School details come from the Department for Education's Get Information About Schools register. Inspection outcomes come from Ofsted, and exam results from the Department for Education's school performance service. This page was last updated on 29 June 2026.