[3] The school was founded in 1856, when the Society of St Vincent de Paul purchased a building in Mountbrown, Kilmainham.

[4] This school opened in 1860 and had residential accommodation for 150 boy boarders,[4] teaching facilities, and a farm which supplied milk and vegetables.

The former principal of St. Vincent's secondary school, John Horan, served as president of the GAA from 2018 to 2021.

including with new equipment for its chemistry, physics and computer laboratories, and the extension of the Arts & Crafts, Construction Technology and Library multimedia facilities were completed in 2017.

[citation needed] A large sports hall/gymnasium complex contains a gaelic handball alley, a basketball court where large-scale competitions are held, and other facilities such as specialist classrooms, a canteen and an oratory.