Group Swimming Lessons for All Ages All swim classes are taught by an American Red Cross Certified Water Safety Instructor and include six (6) lessons over two (2) weeks. Classes are on a first come first serve basis. There are no make up classes due to inclement weather. Instructor to student ratio is 1 to 6. Swim test required for registration. Swim test available Monday - Friday 9:30 AM - 5:00 PM and Saturday - Sunday 9:30 AM - 4:00 PM.