text: Maine Principals' Association Maryland Public Secondary Schools Athletic Association
  Massachusetts Interscholastic Athletic Association
  Michigan High School Athletic Association
  Minnesota State High School League
  Mississippi High School Activities Association
  Missouri State High School Activities Association
  Montana High School Association
  Nebraska School Activities Association
  Nevada Interscholastic Activities Association
  New Hampshire Interscholastic Athletic Association
  New Jersey State Interscholastic Athletic Association
  New Mexico Activities Association
  New York State Public High School Athletic Association
  North Carolina High School Athletic Association
  North Dakota High School Activities Association
  Ohio High School Athletic Association
  Oklahoma Secondary School Activities Association
  Oregon School Activities Association
  Pennsylvania Interscholastic Athletic Association
  Rhode Island Interscholastic League
  South Carolina High School League
  South Dakota High School Activities Association
  Tennessee Secondary School Athletic Association
  University Interscholastic League (Texas)
  Utah High School Activities Association
  Vermont Principals' Association
  Virginia High School League
  Washington Interscholastic Activities Association
  West Virginia Secondary School Activities Commission
  Wisconsin Interscholastic Athletic Association
  Wyoming High School Activities Association
  Affiliate associations
  Alberta Schools Athletic Association
  British Columbia School Sports
  Department of Defense Education Activity
  Florida School Music Association
  Georgia Independent School Association
  Illinois Elementary School Association
  Independent Interscholastic Athletic Association of Guam
  Iowa Girls High School Athletic Union
  Iowa High School Music Association
  Manitoba High Schools Athletic Association, Inc