[Bungleau]

And I thought they could increase their level in any school they already knew; moon and fiend were just the two new schools they started learning. If they knew spirit and vine, they could train in those; if they didn't know stone, they couldn't start learning it.

For some reason, I'm thinking that they learn spells without the half-penalty, even though I posted differently above. That post above is based on things others have said, and less on my own experience.

The base thought holds true, though: get your level 7 spells before you move on to another class, 'cause you never know when you might get 'em again.