Semi-Private Swim Lessons are a great way to have your child swim with a friend or a sibling that is around the same age and swimming ability. Ages are broke down 3-5 years old and 6 and up. Must register in pairs and each swimmer must pay the appropriate fees. Please not the following: These are six, 30-minute lessons. No makeup are given for missed classes. No refunds 7 days before the start of the session.