D.T.
I went through early intervention with my youngest. It was a great experience for me. I have a son with lots of behavioral issues and without them I would have lost it. Three is most of the time a little to young to actually diagnos anything, but certain behavioral issues can be worked on. Plus it is free, and can take the place of preschool if it works out. They are basically trying to get him ready for regular school, you will get advice on his behavior, and he should like it. You will go for an evaluation with your son at first, and then your son will be placed where he needs to be if he needs anything. Sometimes kids display different behavior in different settings. I agree though, kids are expected to be silent little robots these days. It is natural for boys to be rowdy, but they should be able to learn to not do this so they can learn. If the early intervention don't find anything wrong, I might consider no preschool until he is four. Let him mature some more. It isn't mandatory that kids go to preschool.