I would like if we could fight our teachers in their towers in ravenwood. When you reach level 50 they should spawn whenever you enter the tower and they have very high health depending on your level. Like if you were a level 90 the teachers should have at least 25,000 health. This is a good way to take your frustration out on a teacher rather than on your friends and family.
It would be fun and quite useful if we could "spar" with our teachers & get actual lessons. Like when we earned a new spell, instead if just adding it, they'd show us how to best use it. This would be optional, as experienced players might already know, but i've seen a lot of players who could use some tips, and it would make the school part of the story seem more real. We should go to class once in a while.