Sunrise Mountain High School is a public secondary school located in Peoria, Arizona, United States, part of the Peoria Unified School District. The school opened its doors in August 1996. It is the district's second-smallest high school by enrollment, larger than only Cactus High School.Overpopulation problemSunrise Mountain dealt with considerable overgrowth in the early and mid-2000s. With 2,440 students by 2005, many freshmen classes were pushed out to "Frosh Island", a former elementary school. Between each period a bus would shuttle students between "Frosh Island" and the main campus so that classes such as physical education, band, advanced science, and choir could be attended by freshmen. The use of this campus was discontinued by Sunrise Mountain following the end of the 2005-2006 school year. The overpopulation problem has been relieved by the creation of Liberty High School. Liberty is now larger than Sunrise Mountain by some 600 students.MusicSMHS has a marching band, concert band and jazz band directed by Chris Vail. The jazz band competes yearly in the Northern Arizona University jazz competition. The orchestra and the choir programs are directed by Tanya Boehme. The orchestra competes yearly in the Northern Arizona University Orchestra Festival. Both choir and orchestra have achieved the highest of honors. The orchestra is also the only one of its kind in the district. The Varsity choir performs at many school events and also goes to compete at Northern Arizona University. Many choir students have also competed in solo ensemble competitions.