Edge High School is a public alternative high school in Tucson, Arizona, operated by The Edge School, Inc. It operates two campuses in the Tucson area. Edge Himmel Park opened in 1985 and is named after the nearby city park. It is the largest campus and home to the administrative offices. Edge Northwest opened 2004. With 172 students in grades 9-12, Edge Himmel Park has an 18 to 1 student-teacher ratio.