Pennsylvania Interscholastic Athletic Association was created in 1913.
Massachusetts Interscholastic Athletic Association was created in 1977.
Wisconsin Interscholastic Athletic Association was created in 1895.
District of Columbia Interscholastic Athletic Association was created in 1958.
New Jersey Interscholastic Athletic Association was created in 1896.
New Hampshire Interscholastic Athletic Association was created in 1947.
New Jersey State Interscholastic Athletic Association was created in 1918.
Pennsylvania Interscholastic Marching Band Association was created in 1993.
Pennsylvania Collegiate Athletic Association was created in 1979.
Pennsylvania State Athletic Conference was created in 1951.
Interscholastic was created in 1999.
Pacific Western Athletic Association was created in 1970.