Bishop Allen Academy; officially known as Bishop Allen Academy Catholic Secondary School (alternatively as Bishop Allen, Bishop Allen Academy CSS, BAA, BAACSS, BA, Allen), is a high school in Toronto, Ontario, Canada managed by the Toronto Catholic District School Board, formerly the Metropolitan Separate School Board. It is one of the board's 31 secondary schools and houses about 1643 students as of the 2017-18. The school building opened in 1963 as Kingsmill Secondary School (1963-1988) by the Etobicoke Board of Education, which later became the Toronto District School Board, and has leased the campus to the MSSB/TCDSB since 1989. It is located in the Queensway – Humber Bay neighbourhood of Etobicoke.