Are you kidding me? I was appalled that you would even say such a thing. Like your child can't learn good things from a challenged kid? I have a challenged grandchild. The most beautiful spirit. Your grand kid would be blessed to know him. I would be more concerned about them learning from other kids that influence them in much more devastating ways that could ruin their lives. He will outgrow any minor things like arm flapping and such that he learned from association with disabled and challenged kids that annoyed you. Matter of fact, I'm leaving tomorrow to go to the Special Olympics. So I will not be around.