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This class is presented by IACO (Inter-Athletic Council of Athletic Officials) and is supported by the IHSA (Illinois High School Association). IACO is an organization made up of 14 officials associations throughout northeast Illinois. Member officials of these associations officiate most IHSA sanctioned high school sports. IACO’s mission is to recruit, and train new as well as veteran high school sports officials in standardized methods and techniques of officiating high school sports.