Rialto Unified School District boasts a diverse population of approximately 25,000 students. With more than 2,700 district employees, the RUSD is the largest employer in the City of Rialto. Presently, the District has three comprehensive high schools, one alternative/adult education school, one continuation high school, five middle schools, 19 elementary schools and 20 preschools (on elementary campuses) in the cities encompassing Rialto, including parts of Colton, San Bernardino, Fontana, Bloomington and Lytle Creek.