Edward Pauling Primary School is the best in Hounslow when it comes to improving pupils' performance, according to the latest government league table.
The school, in Redford Close, Feltham, achieved a 'value added' score of 102.7 in the Key Stage 2 table, published today.
It is one of five primary schools in the borough to score 102 or above, two points more than the expected standard. The others are: St Mary's RC Primary, in Chiswick; Lionel Primary, in Brentford; Grove Park Primary, in Chiswick; and The Rosary Catholic Primary, in Heston.
The value added score reflects the progress made by youngsters between joining the school and leaving. It is based on the difference between the results of Key Stage 1 tests, which they sit aged seven, and Key Stage 2 exams, taken at the age of 11.
Across the borough, 29 primary schools scored 100 or more and only 16 scored less than 100, with Bedfont Primary School recording the lowest score, of 98.6.
The Blue School, in Isleworth, was the only primary school in the borough where 100 per cent of pupils scored level 4 or above in reading, maths and the writing teacher assessment.
Spring Grove Primary School, also in Isleworth, topped the table when it came to the number of pupils getting level 4B or better in reading and maths and 4 in the writing teacher assessment, with 97 per cent.
Crane Park Primary School had the borough's lowest proportion of children achieving level 4 or better across all three subjects, with 49 per cent.