Community High School's Theatre Group - this page provides information on upcoming shows and public Community Ensemble Theatre (CET) continues a decades-long tradition of excellent theatre at Community High School in Ann Arbor, Michigan. We strive to create high-level productions while providing a nurturing environment where every ensemble member is valued and supported. With more than 120 students from across the Ann Arbor school district participating every year, CET is the largest extracurricular group at Community High, engaging students with challenging, thought-provoking, sometimes off-beat, always entertaining shows in the humble blackbox, the Craft Theater.