It’s simple: you go to
Onion Knight Elementary
Freelancer Middle
Enchanter High
Mage College
And then post graduate classes include
Blue Magery
Advanced Murder Magic (taught by BM)
Advanced Summoning
Red Magery
Advanced Geomancy
Non Necromancer Necromancy (White Magic)
Math School
Sagery: A 25 year course
Advanced Thanatothaumaturgy
Dimensional Wizardy (Time and Space available)
and Advanced Non-Magical Self-Defense Magic