Ok, I may be alone here...but I think a lot of these classes aren't really needed at all when kids are so young. I really recommend "The Hurried Child" by David Elkind (
http://www.amazon.com/Hurried-Child-...9080645&sr=8-1
).
He talks a lot about the surge in children getting involved in sports/activities outside of the house before they are even 'school' age and the things that motivate a lot of parents to the decision that these are good things for them at such a young age.
Just my opinion. It's hard because 'everyone' else gets their kids involved in these activities all the time. I often question if I 'should' be doing it too. For what it is worth, my 5 y/o has yet to be to any organized exercises classes and is very very active and in great shape. It's all that biking, hiking, running, dancing, and swimming all over the place !!!! My husband and I are pretty serious athletes and they observe that; however, they just don't need it at this point in their life!