For infant-through-adult swim instruction in New Encinitas, Main Street Swim School caps group lessons at four students per teacher inside the pool facility at 201 South El Camino Real. The six-tier curriculum advances babies from breath-control acclimation through bilateral backstroke and butterfly introduction, building the early aquatic motor skills that Encinitas pediatric providers including Children's Primary Care Medical Group emphasize for childhood developmental milestones. Each level requires demonstrated proficiency before promotion, with safety crawl, treading, and independent floating benchmarks gating advancement from Swim Kids through Swim Star tiers. The Encinitas campus is one of three Main Street Swim School locations in the San Diego region, alongside Sorrento Valley and Oceanside facilities, all running the same results-based progression. Competitive-stroke refinement for pre-team candidates builds endurance across all four strokes and introduces flip-turn mechanics — aquatic motor patterning that aligns with the pediatric movement-development programming at Moving Munchkins Pediatric Physical Therapy. Advanced sessions incorporate bilateral breathing drills, streamline body-position analysis, and 50-meter continuous-swim benchmarks across freestyle, backstroke, breaststroke, and butterfly.