We all worry about whether our kids are on track for reaching certain childhood milestones. Should she be riding a bike by now? Should he be able to sleep at a friend's house?
I know Carson had no trouble spending the night with friend's when he was about 7, but his brother Chase didn't like to spend the night at a friend's until he was probably 10 or so, if I remember right.
Here are nine milestones and the age your kid should probably reach them thanks to Parents.com