just a couple of 问题 needing clearing up...

hey,
just ac ouple of questions...i am re-reading HP again, am currently on chamber of secrets, when a few things occured to me:

1. what house was hagrid in?

2. what did dumbledore teach before he was headteacher? (have a feeling it was charms??)

and if it says in the books- which 图书 are they in?

thanks