Standley Lake High School is a public secondary school operated by Jefferson County School District R-1 in Westminster, Colorado, United States. The school is located near 104th Avenue and Wadsworth Boulevard and is named for nearby Standley Lake. The high school opened in 1988 and a new addition to the southeast corner was opened in 2002. This school has been an I.B. (International Baccalaureate) school since 2012.