Good questions. We went too long with our youngest, allowing him to dictate the pace, partly because he's a perfectionist and uncomfortable with not knowing things. It was more important for him to get straight As than move ahead a grade in a subject. I think that has held him back in some ways. Or at least allowed him to remain "unseen." Now that we have more information, I'm going to be holding him to higher expectations and pushing him a little to challenge his comfort levels.