Hi there!

I rather like what you have listed here.
Incidentally, I too used TES as inspiration for a spell system within a game of my design.
Great minds thinking similarly and all that

To my understanding this is how this all works:
You learn a School's base spell.
As you get stronger, you invest in Disciplines to expand your spell list.
You also learn Augmentations as you progress to add power to your spells.

If that's how it works, then it seems like a pretty solid system
Makes me wonder how combat and other things work...