The Washington Interscholastic Activities Association (WIAA) is a private, nonprofit 501(c)(3) service organization and rule-making body that was formed in 1905 to create equitable playing conditions between high school sports teams in Washington. The Association consists of nearly 800 member high schools and middle/junior high schools, both public and private, and is divided into nine geographic service districts. The state staff administers Association policies, rules and regulations and provides other assistance and service to member schools.