The William S. Hart Union High School District is located in the Santa Clarita Valley in the northern part of Los Angeles County and serves 7th through 12th grades with an annual budget of nearly $180 million. Nearly 23,000 students are enrolled in the district's six comprehensive high schools, a continuation school, middle college high school, independent study school, a home school support program, six junior high schools, an adult school and a Regional Occupational Program.