School Age Swim Lessons (Ages 6-12) BACK Branches All Branches School Age Swim Lessons (Ages 6-12) Swim Basics:Stage 1: Water AcclimationStage 2: Water MovementStage 3: Water StaminaSwim Strokes:Stage 4: Stroke IntroductionStage 5: Stroke DevelopmentStage 6: Stroke Mechanics