It has been proven over and over that lower student to teacher ratio is the best situation for learning. Therefore, one student to one instructor is the optimal for learning. Private Lessons are 30 minutes each class up until 5 years old, and 6 and up is 40 minutes per lesson. At Bubbles Swim School we specialize in quick and effective learning through one-on-one lessons that are individually tailored to the students learning style and developmental level.