Typing up the Arduin Special Ability Charts and tweaking them for my own campaign (converting skills to my own skill system, replacing undead with fungus and so forth), I realized that the Magic User chart has a system of magic schools or categories, like many people have house-ruled and like D&D 3.x made a part of the magic system under the moniker "domains." Here it is. I may do something with this someday, but not now.
Fire and Light
Animation and Disanimation
Time and Gate
Sleep and Charm
Cold and Poison
Fear and Confusion
Teleport, Phase and Dimension Door
Is this a reasonable division of schools or domains of magic? Are there any spells you can think of that don't fit into one of these categories?