The Green School in Isleworth is Hounslow's top secondary school when it comes to improving pupils' performance, according to GCSE league tables published today.
The school in Busch Corner achieved a 'value-added' score of 1035.7, reflecting the progress made by students between joining the school and sitting their GCSEs five years later.
All but two of the borough's 14 non-fee-paying secondary schools scored at least 1,000 points on the scale, meaning pupils are making the expected progress or better.
Only Gumley House Convent RC School, in Isleworth, and Feltham Community College dipped just below the standard, getting 999 and 996.3 respectively.
Cranford Community College (1032.1) and Brentford School for Girls (1026.3) took second and third place respectively in the borough's value-added league table.
Jill Coughlan, interim headteacher at The Green School, said: “We are delighted to have topped the local league table for adding value to the learning of our girls. We want all our students to beat their examination targets and do better than is expected nationally.”
She added that to help them prepare for their exams last summer, dedicated students had given up their holidays to attend half-term and Easter revision sessions, along with after-school classes.
Gunnersbury Catholic School, in Brentford, topped the table when it came to overall results, with 90 per cent of students getting five or more A*-C GCSEs (or equivalent), including English and maths.
Oak Heights Independent School, a private school in Hounslow town centre, was second with 89 per cent, followed by St Mark's Catholic School, in Bath Road, Hounslow, with 82 per cent.
Kingsley Academy, formerly known as Hounslow Manor School, was at the foot of the table, with 28 per cent, just below Rivers Academy, in Feltham, with 50 per cent.
Across Hounslow, two thirds (66.7 per cent) of pupils bagged five or more A*-C GCSEs (or equivalent) including English and maths, well above the national average of 59.2 per cent.