Riverview Elementary School in Lakeside serves grades two through five as part of the Lakeside Union Elementary School District, occupying its Winter Gardens Blvd campus at 9308 since 1958. The school operates as the upper-elementary campus of Riverview International Academy, San Diego County's sole dual-immersion Spanish and Mandarin program, feeding graduates into the secondary pipeline at Lakeside Middle School on Woodside Ave. CDS code 37-68189-6038384 identifies the site in California Department of Education records, with current enrollment near 470 students and a 24-to-1 student-teacher ratio across 21 equivalent full-time teaching positions. STEAM labs, weekly music instruction, art programming, and cultural-enrichment activities supplement the immersion curriculum, with literacy resources extended through partnerships with the San Diego County Library – Lakeside on Woodside Ave. Students in the Spanish track follow a 90/10 immersion model that transitions to 50/50 by fifth grade, while the Mandarin track maintains a 50/50 English-Mandarin ratio with third-language enrichment preparing candidates for the California State Seal of Biliteracy.