Guidelines
Each region holds several quarterfinal events. The top two college groups at each quarterfinal advance to the semifinals, and the winner of each semifinal is invited to participate in finals, currently held in the Town Hall NYC (the event has also been held in Lincoln Center for the Performing Arts, Carnegie Hall and The Beacon Theatre on Broadway), where they compete for coveted title of International Champion.
Each group prepares a short 12 minute performance (usually three songs) that best show the group's strengths. Primary focus is on a group's musical performance, but presentation is important so it's not unusual to see choreography involved as well. Groups generally range in size from 8-20. A panel of three to five trained judges evaluates the group's performance.
Read more about this topic: International Championship Of Collegiate A Cappella