Craigavon Senior High School was established as a separate controlled school on 1 September 1995. Its primary function is to provide education at Key Stage 4 for those 14- to 16-year-old pupils who transfer from the junior high schools in Lurgan, Portadown and Tandragee. It is the only school in Northern Ireland that solely caters for pupils at Key Stage 4. Craigavon Senior High School operates as a single school on two sites sharing its Lurgan and Portadown campuses with the Upper Bann Institute of Further and Higher Education. It has its own board of governors, principal and teaching staff.