St Mary's Catholic Primary School, Isleworth

About St Mary's Catholic Primary School, Isleworth

St Mary’s Catholic Primary School in Isleworth is a state-funded primary for mixed pupils aged 3 to 11, and it is clearly a popular choice among local families. The school has capacity for 420 children but currently enrols 393, leaving a small number of spare places. However, demand significantly outstrips supply: for the 2025/26 intake, the school received 141 applications for just 56 places, with only 46 first-preference offers made. That works out at 2.52 applications for every place, a strong signal of its reputation in the borough. The proportion of pupils eligible for free school meals stands at 10.9%, which is below the national average for primary schools and suggests a relatively affluent intake. As a Roman Catholic school, its admissions criteria will naturally prioritise families with a faith connection, which may partly explain the high demand. The school also offers nursery provision, so families can join from age three.

Academically, St Mary’s performs well above the local average. In the 2023/24 Key Stage 2 assessments, 86% of pupils reached the expected standard in reading, writing and maths combined, compared with a Hounslow average of 70%. That places the school 4th out of 44 primary schools in the borough, putting it in the top 5% locally and the top 5% nationally. The maths average score was 109, reading 107, and 95% of pupils met the expected standard in maths alone. At the higher standard, 45% achieved in maths and 36% in reading, though writing at the higher level was lower at 17%. Progress scores are not available in the data, but the raw outcomes are strong. The school’s most recent Ofsted inspection, an ungraded visit in June 2022, confirmed it remains Good, with leadership and management also rated Good. The previous graded inspection in 2012 also awarded Good overall, so the school has maintained a consistent standard over time.

The school offers a solid range of facilities including a sensory room, forest school area, library, gymnasium, playing fields, ICT suite and a chapel. Sports provision covers football, cricket, cross country, athletics, tennis, rounders and gymnastics, while clubs include coding, gardening, choir, science and art. For children with additional needs, the school lists SEND provisions for specific learning difficulties such as dyslexia, moderate learning difficulty, social, emotional and mental health needs, speech and language communication needs, hearing impairment and autistic spectrum disorder. Given the oversubscription, families with a Catholic connection or those living close to the school will have a stronger chance of securing a place. The nearest Outstanding-rated primary is Lionel Primary School, 3.5 km away, so St Mary’s is a strong Good option within the borough for families who value strong academic results and a faith-based environment.

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