My DS will be 8 (until December) when he starts 4th. He was accelerated this year from K to 1st. He tested very well, and could've easily been in 2nd (they wanted to put him in 2nd grade ALP), but because he is so young and a boy, we skipped one grade for now. It's been the BEST thing we've ever done. But it has to be right for your child.

Definitely look at the info that Dandy posted!