Our ds12 usually gets along much better with older kids as well. He has low tolerance for some of the posturing kids his age do as well as behavior he sees as unfair or blatantly hostile. Just has no patience for it.

I wondered if he would have a difficult time socially this year being grade-skipped but nope. He gets along well with the friends he's made. Some of it may be due to the fact that they're being patient and somewhat indulgent of him, but I also see he's much less bothered by their behavior because they tend to be more mature.