Bloomington High School is a high school in unincorporated Bloomington, California, near Riverside, Rialto, San Bernardino, and Fontana.

The school was established in 1962 for a student population of 900.

It belongs to the Colton Joint Unified School District.

The school mascot is a Bruin which is a type of young bear.

The school has put in new Math and Science wings and has been open since 10 October 2011.