Cardiff School District in Encinitas's Cardiff-by-the-Sea community operates two elementary campuses — Cardiff School for grades K through 2 and Ada Harris School for grades 3 through 6 — from its administrative offices on Montgomery Avenue. Established in 1913, the district ranks among the highest-performing elementary systems in San Diego County and makes its classrooms, gymnasiums, sports fields, and multi-use rooms available for community rental through the Facilitron scheduling platform, a shared-use model that extends recreational programming at Cardiff Sports Park across the Cardiff campus footprint. Facility reservations require proof of insurance and are governed by board-adopted use policies, with payment accepted via credit card, ACH transfer, and PayPal through the Facilitron portal. The district's 92007 ZIP code placement feeds graduates into the San Dieguito Union High School District, a secondary system whose feeder network also draws from the Encinitas, Solana Beach, Del Mar, and Rancho Santa Fe elementary districts. School garden and outdoor-education programming connects the campuses to local nurseries such as Cordova Gardens for native-plant materials and composting curriculum support. Available rental spaces include a 4,800-square-foot multi-purpose room with stage access, regulation-size grass athletic fields, and hard-court areas suitable for tournaments, craft fairs, and community fundraising events.