That's not an actor value, that's a renaming of a school of magic, isn't it?
Correct. You can't do it in the CK, and I have a problem with that. I also have a problem with not being able to mod the UI in the CK. But then, I have a problem with a great many things. I just can't figure out why Beth allows some things, but not other things. For instance, their UI is copyright, and they don't want people changing it. Why is beyond me, as the Skyrim UI, in my humble opinion, is terrible.
EDIT: It must be getting late for me. I said that I was going to change the actor values, and I didn't. My mission is not accomplished by any means. My screenshot is not one of victory, it's more a statement of, "Why does this have to be so hard?"