Established in 1920, the Sweetwater Union High School District Administration Center in Chula Vista serves as the central office for one of San Diego County's largest secondary-education systems, headquartered at 1130 5th Ave in the 91911 ZIP code. SUHSD oversees 14 high schools, 11 middle schools, four adult schools, and a Regional Occupational Program across a territory spanning Chula Vista, National City, Imperial Beach, South San Diego, and Bonita—a postsecondary talent pipeline that includes clinical training sites at Pima Medical Institute – Chula Vista. The district enrolled approximately 34,862 students in the 2025-26 academic year and employs a staff of more than 3,100 full-time equivalents managed from the 5th Avenue administrative campus. A five-member elected Board of Trustees governs SUHSD, setting policy for career technical education pathways, Advanced Placement and International Baccalaureate programs, and special-education services that extend into community facilities like the Chula Vista Youth Center. District-wide facility improvement projects include stadium renovations at Castle Park High School and upgraded athletic infrastructure at Mar Vista High School, funded through general-obligation bond measures approved by voters in the SUHSD service area.