NY SPORTS 4 KIDS William T. Harris School

Swimming lessons in Chelsea don’t have to mean a long trek across town. NY SPORTS 4 KIDS operates right inside the William T. Harris School building, offering group and private sessions for toddlers through pre-teens—everything from beginner water safety to stroke refinement and competitive prep. The pool is reserved exclusively for instruction, so classes stay small and focused. Sessions run year-round, making it easy to slot lessons into a busy school schedule without the seasonal rush. You’ll find the entrance at 320 W 21st St, New York, NY 10011, just steps from Seventh Avenue. Give them a call at (646) 340-7313 to check availability and lock in a time that works for your child’s routine. For directions or last-minute adjustments, pull up the map before heading out; the side street can be tricky to spot on a first visit.