Tanbridge House School is a community school in Horsham, West Sussex, admitting pupils aged 11-16. The school has approximately 1,524 pupils on roll, of whom 10% are eligible for free school meals.
In 2025, pupils achieved an Attainment 8 score of 54.2, placing the school #5 in West Sussex and #533 of 3,216 nationally. 59.40% of pupils achieved grade 5 or above in English and Maths. 30.5% 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 1.1× as many applications as places, making a successful application competitive.
The pupil-to-qualified-teacher ratio is 16.4:1. There are 5 teaching vacancies.
In the 2024/25 academic year, there was 1 permanent exclusion. The average suspension rate was 5.3 per 1,000 pupils per term.