The County High School, Leftwich is an academy converter in Northwich, Cheshire West and Chester, admitting pupils aged 11-16. It is part of THE SIR JOHN BRUNNER FOUNDATION. The school has approximately 1,048 pupils on roll, of whom 16% are eligible for free school meals.
In 2025, pupils achieved an Attainment 8 score of 51.9, placing the school #5 in Cheshire West and Chester and #723 of 3,216 nationally. 57.60% of pupils achieved grade 5 or above in English and Maths. 30.0% of all GCSE entries were graded 9–7.
Ofsted last inspected the school in 2016. The school's current overall rating is 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 17.8:1. There are no current teaching vacancies.
In the 2024/25 academic year, there was 1 permanent exclusion. The average suspension rate was 5.5 per 1,000 pupils per term.