La Sierra High School, located in Riverside, California, United States, is a public high school in the Alvord Unified School District that was founded on August 28, 1969. Joshua Moss is the principal. La Sierra High School's official school colors are navy blue and white. Red is the accent color and has been since the school opened. The two main feeder schools for La Sierra High are Arizona Intermediate and Villegas Intermediate schools. La Sierra's rivals are Norte Vista High School and Hillcrest High School (Riverside, California), the other public high schools in Alvord Unified.