Bluewater Athletic Association (BAA)
The BAA has 13 member schools from the counties of Grey and Bruce. The schools are located in Owen Sound, Walkerton, Port Elgin, Kincardine, Lion's Head, Wiarton, Chesley, Meaford, Flesherton, and Hanover.
District 8 Athletic Association (D8)
There are 8 schools in D8 located in the Region of Waterloo. The schools are from the Waterloo Catholic District School Board and other independent schools in the area.
Huron-Perth Athletics (HPA)
Schools in HPA are located in counties of Huron and Perth in the WOSSAA Region of Ontario. There are 11 schools in the association.
Kent County Secondary Schools Athletic Association (KCSSAA)
There are 10 schools in KCSSAA, which are located in the municipality of Chatham-Kent, Ontario.
Lambton Secondary Schools Athletic Association (LSSAA)
Schools in LSSAA are located in Sarnia, Ontario and the surrounding area of Lambton County. There are 7 schools in the association.
Lake Ontario Secondary School Athletic Association (LOSSA)
LOSSA is made up of 32 schools primarily in Durham Region including the cities of Oshawa, Whitby, Pickering, and Ajax.
Thames Valley Region Athletic Association (TVRAA)
Schools in TVRAA are located in the city of London, Ontario and the counties of Middlesex, Oxford, and Elgin. With 37 high schools, TVRAA is one of the largest high school athletic associations in Ontario.
Windsor and Essex County Secondary Schools
Athletic Association (WECSSAA)
Schools in WECSSAA are located in the city of Windsor, Ontario and surrounding area of Essex County. There are 28 schools in the athletic association.