Coláiste an Oileáin, St.Patrick’s Boys Secondary School opened in the Carnegie Library, Castleisland in September 1939 by Sean Prendiville. This continued until 1945 when Timothy Kerrisk took over and it remained in the library until 1962 before moving to the old boy’s national school in College Road, its current location. Timothy Kerrisk continued until 1986 when it was taken over by Dan O’ Connor who ran the school until 2012. From 2012 to 2024 Denis O’Donovan was principal and manager. In 2024, Tim Long was appointed principal of St Patrick’s Secondary School, as a past pupil of the school he proudly continues the long and outstanding tradition of education in St Patrick’s Secondary School.