So obviously I'm a little late to the party, but maybe someone will stumble in here and have use of this. I did some detailed charting of the different schools and here's my conclusion, as simple as possible: Alteration: (CalculatedCost * SkillMult) * 3.065 = Aquired skill Conjuration: (CalculatedCost * SkillMult) * 2.135 = Aquired skill Destruction: (CalculatedCost * SkillMult) * 1.376 = Aquired skill Illusion: (CalculatedCost * SkillMult) * 4.725 = Aquired skill Restoration: (CalculatedCost * SkillMult) * 2.012 = Aquired skill To make a short story long here's the actual data and how I acquired it: