Wisconsin Interscholastic Athletic Association was created in 1895.
Massachusetts Interscholastic Athletic Association was created in 1977.
Washington Interscholastic Activities Association was created in 1920.
Nevada Interscholastic Activities Association was created in 1922.
Pennsylvania Interscholastic Athletic Association was created in 1913.
Pennsylvania Interscholastic Marching Band Association was created in 1993.
New Hampshire Interscholastic Athletic Association was created in 1947.
District of Columbia Interscholastic Athletic Association was created in 1958.
New Jersey Interscholastic Athletic Association was created in 1896.
New Jersey State Interscholastic Athletic Association was created in 1918.
Massachusetts Interscholastic Athletic Association's motto is 'Building the future through athletics'.
Interscholastic was created in 1999.