The Frederick and Elizabeth Haas Humanities Building serves as the venue for Prep's fine arts. The building, which opened in 1994, contains the 480-seat Figge Theater, an art studio, a computer lab, and six classrooms.
Theatrical productions, concerts, guest speakers, and assemblies are all held in the Haas Building. The Prep Players perform three productions during each school year. Concerts, such as the annual Christmas and Spring concerts, feature the Prep Singers, Orchestra, Band, and Jazz Band.