The Quebec-Ontario Athletic Association (QOAA) was a top tier scholastic league operating in Ontario and Quebec. It is unclear whether the league started in 1953 or 1955. In any event, it lasted until 1971 when it and the other two conferences operating in Ontario and Quebec (OIAA and OSLC) were merged and realigned into two conferences set up on provincial lines. The historical league set-up for Ontario and Quebec has been as follows: