My DD is skipped after half a year of K into a split 1/2 class. So the other children are a minimum of fully 1yr older, over half are fully 2yrs old (for some reason the birthdays in this class are more clustered around July/august than any other class any of my kids have been in). She is so very much better off socially than she was in her age appropriate class. Due to her birthdate, and our odd system in my state, she was going to get 6 terms of K had she note moved to yr1 this year. She would have been one of the oldest in her grade had she not skipped, so theoretically she should have some children in her class not far from her age, but it just hasn't worked out that way, also due to odd circumstance all other grade ones are boys and all the girls are in grade two, so ALL her female peers are fully 2yrs older. And that has been to her benefit, and it's been awesome for her to be placed in a class where she's not struggling at all but she's not at all the top student (yet) either.