Mater Dei Juan Diego Academy in Chula Vista's Eastlake area operates as a TK-12 Catholic school on a 48-acre campus at 1615 Mater Dei Drive, accredited by the Western Association of Schools and Colleges under the Roman Catholic Diocese of San Diego. Founded in 1960 by Bishop Charles F. Buddy as the first coeducational Catholic high school in the diocese, the institution has grown to enroll approximately 1,490 students across its elementary and secondary divisions, and CVESD-district families seeking public charter alternatives in the same eastern corridor find comparable K-8 programming at Mueller Charter School. The high school division fields 16-to-1 student-teacher ratios and runs Advanced Placement and honors-level coursework under the Crusaders athletic banner in CIF San Diego Section competition. The elementary Juan Diego Academy component provides a faith-integrated TK-through-eighth-grade pathway on the same Mater Dei Drive campus, and extracurricular youth development programming extends into community facilities including the Chula Vista Youth Center. The 48-acre campus houses dedicated science laboratories, a performing arts auditorium, competition-grade athletic fields, and a chapel, with the high school's CIF program spanning 20-plus varsity sports including football, basketball, baseball, track and field, and volleyball under the Crusaders name.