At this point I'm still trying to think up some unconventional powers to base the seven schools around, so far I've got three.

The School of the Buried Brave 
The School of the Sword Eating Shield
The School of the Stranded Eye

I'm not going to give away too much on those three yet but I'm fairly pleased with how they turned out. I'll be adding them to the big board once I think up four more without having to pull the same tired powers out of the bottom of the idea bin.