Olive Branch Early Education Center in Chula Vista operates on Hilltop Drive as part of Educational Enrichment Systems, a 501(c)(3) nonprofit founded in 1979 that runs more than 20 preschool sites across San Diego County. EES maintains a 3:1 staff-to-child ratio for infants, 4:1 for toddlers, and 8:1 for preschoolers, classroom densities that echo the individualized attention at Children's Choice Academy elsewhere in the city. The research-based curriculum is culturally and linguistically tailored to meet each student's social, emotional, physical, and educational needs, serving over 1,300 children annually across all EES locations. Free and reduced-cost enrollment slots are available to income-qualifying families under California Department of Education guidelines, and the 91910 location sits within the Hilltop corridor near the pediatric specialists at Cajulis Pediatric Dentistry. EES classrooms deploy developmentally appropriate, play-based instruction using Creative Curriculum and DRDP assessment tools to track each child's progress across all California Preschool Learning Foundations domains.