Learning Tree Preschool in Encinitas's Cardiff-by-the-Sea district holds California Community Care License #376700652 for children ages two through five at its Birmingham Drive campus near San Elijo Lagoon. The blended play-based and academic curriculum addresses pre-literacy, early numeracy, and social-emotional milestones, using the same developmental benchmarks that Davis Pediatric Dentistry references when tracking age-appropriate oral health readiness in Cardiff-area toddlers. Classrooms operate on a year-round calendar with mixed-age groupings that allow siblings to remain together while each child progresses at an individual pace. The facility uses exclusively non-toxic, plant-based cleaning products throughout its indoor learning spaces and outdoor play yard—a protocol that aligns with California's Healthy Schools Act standards for early childhood settings. Water-confidence skills developed on the Birmingham Drive campus carry over to structured swim instruction at SwimWorks Swim School, where many Cardiff-by-the-Sea preschool graduates advance to stroke technique. The kindergarten-readiness track incorporates pre-writing exercises using Handwriting Without Tears methodology, phonemic awareness drills, and one-to-one correspondence counting through manipulative-based math stations.