Calgary Roman Catholic Separate School District No. 1 or the Calgary Catholic School District (CCSD) is the Roman Catholic separate school board in Calgary, Alberta, Canada. It also serves the neighbouring communities of Airdrie, Chestermere, Cochrane and Rocky View County. The CSSD receives funding for students from the provincial government of Alberta.

Chestermere, originally named Chestermere Lake, is a city in the Canadian province of Alberta, within Rocky View County. It is largely a commuter town of Calgary and is a member municipality of the Calgary Region. The city, which surrounds Chestermere Lake, was known as Chestermere Lake from 1977 to 1993.