I am a WSI so red cross swim instructor and I would suggest as the person before me as well to take that class it teaches you the proper was to teach stoke progressions and techniques you will need as well as dealing with different ages. you will need to be a good swimmer for this course and already at least know the stokes. Freestyle, backstroke, elementary backstroke, breast stoke, side stoke. butterfly, diving from the deck at least. so you at least have a heads up. good luck!