St John Fisher Catholic School (also referred to as SJF) is a Roman Catholic secondary school and sixth form located in the Diocese of Southwark in Chatham. St John Fisher is one of two genuine comprehensive schools in Medway, an authority that retains selections. Students also travel in from Sittingbourne, and Sheppey in Kent. It is also the only Catholic secondary school within the local authority and also the only secondary school with two separate sites.