I'm not entirely sure if this is helpful but here in Saint Albans, atleast in my sons class, theres no issues I've ever seen or heard of. Granted my sons only in 3rd grade. But his school did a big rally last year about treating everyone the same and we're all the same no matter skin color with the BLM flag. Many schools are doing the same.

BUT there was a story on the news the other day where there were racist insults used at a game, Milton vs Fairfax. It was a "fan" who did it but considering its Milton I'm not surprised. Most of the towns with racism aren't popular destinations, and from the last 15 or so years it's been weeded out for the majority, so I'd think Killington would be a great area to bring your family!