Drum Corps International (DCI) is a non-profit governing, oversight, and sanctioning body for North American drum and bugle corps, whose members are under 22 years of age. DCI is responsible for developing and enforcing rules of competition and for providing standardized adjudication at sanctioned drum and bugle corps competitions throughout the United States and Canada. DCI sanctions two classes of drum corps participation in North America – World Class and Open Class. World Class corps generally have older, more experienced students and tend to achieve levels of excellence commensurate with the experience and skill levels of the students and their instructional staff. DCI produces and sanctions competitions and oversees the setting and application of the rules of competition. DCI also trains and assigns adjudicators and schedules corps for participation in competitions. The summer tour ends with the Drum Corps International World Championships held each August in Indiana.