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The Nevada Interscholastic Activities Association (NIAA) is a private, non-profit organization of secondary schools in Nevada. The NIAA is responsible for sponsoring, directing and developing athletics and activities in Nevada’s high schools. As of August 2018, the NIAA had 118 member schools (including independents) divided into four classifications. The NIAA organizes and conducts 149 league/region tournaments and 71 state championship tournaments.