I've never agreed with the schools of magic in D&D... it was a cumbersome system that was shoved into 2nd without much thought other than it sounded cool. Honestly, the 'eight schools of magic' is probably one of the worst holdovers from 2nd... IMHO. /rant off
If you are married to the idea have having magic by schools then I would redefine them to your satisfaction. I always though it was odd that Conjuration includes: Calling, Creation, Healing, Summoning, and Teleportation even though Necromancy was the school dedicated to understanding life and death.
Thank you for your time,
William Holder