I don't get this thing about "there's this one kid in another class who wanted your contact info, so can I give it to them"? Like, if they won't ask it in person, then the answer should automatically be no. 'cause that's kinda creepy.
@Siikalahna While I think it is a bit strange, the age is to be considered. At that age, I remember when you'd add everyone in your year on Facebook, regardless on whether you talked to them or not, because it was sort of what you did.