Cantell School is a foundation school in Southampton, admitting pupils aged 11-16. It is part of Aspire Community Trust. The school has approximately 1,288 pupils on roll, of whom 43% are eligible for free school meals.
In 2025, pupils achieved an Attainment 8 score of 46.9, placing the school #4 in Southampton and #1,381 of 3,216 nationally. 49.20% of pupils achieved grade 5 or above in English and Maths. 21.8% of all GCSE entries were graded 9–7.
Ofsted last inspected the school in 2024. The school's current overall rating is Outstanding. Inspectors assessed quality of education as Outstanding, behaviour and attitudes Outstanding, personal development Outstanding, and leadership and management Outstanding.
The school is oversubscribed — in the most recent cycle, there were 1.2× as many applications as places, making a successful application competitive.
The pupil-to-qualified-teacher ratio is 15.1:1. There are no current teaching vacancies.
In the 2024/25 academic year, there were 2 permanent exclusions. The average suspension rate was 5.6 per 1,000 pupils per term.