Charles Zupanic High School, established in 1990, is located in Rialto, in San Bernardino County.  The District serves students in a 55 square mile area.  Included in the boundaries are the City of Rialto, the western portion of the City of San Bernardino, a small segment of the cities of Colton and Fontana, and some unincorporated county territory.  At the time of the last accreditation, the Rialto Unified School District served a student population of 30,000. Current district enrollment is over 26,000 students housed in 19 elementary schools, 5 middle schools, 3 comprehensive high schools, 1 continuation high school, and 1 alternative high school. Zupanic High School is a fully accredited independent study high school which recognize the diverse needs, experiences, and backgrounds of our students. Students at Zupanic High School may earn A-G credit and Zupanic teacher utilize the APEX online coursework platform (https://www.apexlearning.com/).