The Costello School

About The Costello School

The Costello School is a secondary school in Basingstoke, Hampshire, classified by the DfE as a converter academy. Around 1,222 pupils aged 11 to 16 attend the school. The school holds a 'Good' judgement from Ofsted (February 2026). The school's average Attainment 8 score in the latest GCSE results was 47.3 — broadly in line with the national average (national average: 46). Its Attainment 8 score has risen by 1.0 points year on year. On our composite score, which combines the DfE attainment measures above, this places it in the top 41% of secondary schools nationally.

50% of pupils achieved a grade 5 or above in both English and maths, above the national average of about 45%. 69% achieved a standard pass (grade 4+) in English and maths. 86% of the families who made The Costello School their first choice were offered a Year 7 place for September 2026, even though the school made at least as many offers as it had first choices - the rest withdrew, moved or fell outside a priority group. In 2026 the furthest child offered a place lived 1.53 miles from the school in a straight line, according to the council's published allocation figures; the distance changes every year with demand. After Year 11, 94% of its leavers went on to education, an apprenticeship or work that they stayed in for at least two terms. Overall pupil absence was 8.9%. There are about 18.9 pupils per teacher. When comparing schools, it is still worth visiting in person to see whether the atmosphere and approach suit your child. 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.