St Mary's Catholic Primary School, Isleworth

St Mary's Catholic Primary School, Isleworth at a glance

Located in Isleworth, Hounslow, St Mary's Catholic Primary School, Isleworth is a primary school, classified by the DfE as a voluntary aided school with a Roman Catholic religious character. The school educates roughly 393 pupils aged 3 to 11. In the most recent Key Stage 2 SATs, 76% of pupils reached the expected standard in reading, writing and maths combined — well above the national average of 61%. That is down 10.0 percentage points in the proportion reaching the expected standard on the previous year. On our composite score, which combines the DfE attainment measures above, this places it in the top 23% of primary schools nationally.

Pupils achieved an average scaled score of 107 in reading and 107 in maths (national averages are about 105 and 104). 11% reached the higher standard across all three subjects (around 8% do so nationally). St Mary's Catholic Primary School, Isleworth was not oversubscribed for September 2026: all 37 families who put it first were offered a place. Overall pupil absence was 4.7%. There are about 21.5 pupils per teacher. Its intake is relatively advantaged, with around 11% of pupils eligible for free school meals in the last six years versus about 24% nationally. St Mary's Catholic Primary School, Isleworth does not currently have a recent graded Ofsted judgement on record (often the case for newer or recently converted schools), so it is worth asking when its next inspection is expected. This overview is generated automatically from the latest published DfE performance tables and Ofsted data; figures are rounded, and you can check the originals via the official links above.