 As of 2018-2019, the school board has 41 elementary and 9 secondary schools located in communities throughout Simcoe County and the District of Muskoka.Its boundaries include are Highway 9 in the south to Huntsville in the north, and from Collingwood in the west to Brechin on the east side of Lake Simcoe.The board was originally known as Simcoe Muskoka Roman Catholic Separate School Board (SMRCSSB) and operated anglophone and francophone schools.