Greater Saskatoon Catholic Schools (GSCS) is Saskatchewan's largest Catholic school division and the third largest school system in the province.
Greater Saskatoon Catholic Schools has approximately 22,000 students, with 53 schools located in Saskatoon and the surrounding rural districts of Biggar, Humboldt, Martensville and Warman. In addition, GSCS co-manages Humboldt Collegiate Institute with Horizon School Division No. 205.