Temecula Valley High School is a public high school for grades 9-12 in Temecula, California. The school opened in 1985 as the city's first high school, along with Margarita Middle School and Temecula Elementary School. When it was built, it was a part of the Elsinore Union High School District (now the Lake Elsinore Unified School District) until the Temecula Valley Unified School District was founded. It is a California Distinguished School. In its first year the school's attendance consisted of 350 students and 17 teachers. Over the years, attendance has increased to over 3,000.