I don't think they are horribly old, several of the 1995s are December birthdays, actually I am surprised many are younger 18s.
In my district December 1 is the cutoff, the December kids are in the correct grade. The other 1995 kids are held back. The PA, MA and MD kids are much older than the NY kids.
FYI, in PA the cutoff for school is August 31, and MANY pre-K programs suggest holding back kids (especially boys) with summer birthdays, not for sports reason but for academic reasons. So naturally, many PA kids will be "older" that is how our system works
