Don't think they bragged on the class page, as yes, that would be tacky. But for your own private FB, it is their prerogative to be proud about their grade. As far as respecting others about their grades, sure. It would be nice if everyone kept grades out of all conversations, but vet school is pretty much life consuming. It is going to dominate most conversations from here on out. Anyway, what I am really trying to say here is get used to it, be confident in yourself, and if it really bugs you, get that A and join in the bragging. haha