I had my daughter in at 2 1/2 and the next year for a week refresher and my son in at 9 months. It was time consuming and costly and I have a third that I will not put in. You can never be too careful, but I think that it made my daughter afraid of swimming. She doesn't remember much at that age (she is 8 now), but she sure remembers swimming lessons with Ms. Sheri. She did not swim until she was 6. My son fell in at 11 mos or so and did manage to flip and float while screaming (we were right there when it happened), but honestly I am not sure that he would have flipped and floated for very long like the video shows. I think that video of the child falling in is not the norm. We have a pool fence and I check it everytime that I look or go outside to make sure that it is not open. It is hard to say if I would put my older two in the lessons again, but I am so busy with three that I don't have the time to take 10 minute lessons for 9 weeks...yes, it took 9 weeks for both of mine to complete the program. Good luck. You can never be to careful, but don't count on it as a jump start to swimming. You can call me...everyone, including me, in my neighborhood put their kids in the lessons.