This research is an evaluation of a six‐week mental health literacy programme, referred to as the Cambridge United Community Trust’s ‘Mind Your Head’ programme, which was delivered by sports professionals to secondary school students (11‐16) in Cambridge, England, during 2017–18. A Mental Health Literacy Scale was used to measure students’ knowledge of mental health issues pre‐ and post‐intervention. Statistical data from these surveys were analysed using an independent samples t‐test. Focus groups were held with students in each school, and individual semi‐structured interviews were conducted with one lead teacher in each school. The statistical data indicate that statistically significant improvements in mental health literacy were achieved, and this occurred across all genders and ethnicities. The qualitative data suggest that this programme resulted in positive attitudes towards mental health and improved knowledge of how to seek help. The data indicate that investment in similar programmes would be beneficial for schools in improving students’ knowledge of mental health and reducing stigma.