Located in Rancho San Diego, Valhalla High School is a public high school operated by the Grossmont Union High School District with an enrollment of 2,112 students. The school is characterized by its school colors, orange and white, going by the nickname Orange Nation. During its existence, the school has won the California Distinguished School Award in both 2001 and 2003, and is also accredited by the Western Association of Schools and Colleges.