Northgate High School is a public high school located in the suburban Northgate neighborhood of Walnut Creek, California, United States. The most recent of five high schools in the Mount Diablo Unified School District, the school was built in 1974, and is home to approximately 1,600 students from Walnut Creek and Concord, California, grades 9-12. Its name derives from its location at the north entrance of Mount Diablo State Park.HistoryNorthgate High School opened in 1974 to relieve pressure on neighboring Ygnacio Valley High School in Concord. Students were gradually phased in; the school graduated its first class in 1976. Northgate was the sixth of six high schools to be built in the Mt. Diablo Unified School District (in 2012, Clayton Valley High School left MDUSD and became a charter school, leaving five regular high schools in the district).In December 2007, a petition was made to move Northgate to the Acalanes Union High School District. The Mt. Diablo school district board and the Contra Costa County Office of Education both denied the petition.In 2016, a group named Northgate CAPS (Community Advocacy for our Public Schools) began a new campaign to separate Northgate High and its feeder elementary and middle schools into a new, separate school district. On May 2nd and 3rd, 2017, the Contra Costa Country Board of Education held public meetings on the petition. Under state law, the petition will go to the California state Board of Education, which will determine whether to put it to a public vote and (if so) what geographic area of voters should vote on it.