The St. Clair Catholic District School Board (SCCDSB, known as English-language Separate District School Board No. 39 prior to 1999) is the separate school board that manages Catholic education in the county of Lambton including the city of Sarnia as well as in the regional municipality of Chatham-Kent, in southern Ontario, Canada.
The Board manages 23 elementary schools and 2 secondary or high schools.
Elementary schools
The secondary schools are:
St. Patrick's Catholic High School in Sarnia
Ursuline College in Chatham
The Board was formed by an amalgamation of the Lambton County Roman Catholic Separate School Board and Kent County Roman Catholic Separate School Board, which took place in 1999.