I would very much like it if this card was a neutral card and not paladin only. The name in my opinion suggests that first day of school counts for all during scholomance no? Maybe I am wrong, you guys have some idea's about it?
Nothing wrong with a spell being neutral, after all we now have a neutral weapon. I do think you have to be careful introducing neutral spells, as they have to be strong enough that some decks want to run them but not an auto-include in every deck. Perhaps there will be a future expansion where Blizzard introduces some legendary neutral spells which have extremely niche uses.
Flavour-wise, I agree that it could fit into any class, and certainly some big-minion decks would consider running it as early game.