Scholar Multi-classing

[dairius_chi]

It works like Multiclassing does normally. If you were a Scholar 4/Black Mage 3 you'd cast spells as a 4th level Scholar(CL 4, 2nd level Black/White available) and a 3rd level Black Mage(CL3, 2nd level Black available). MP pools though so your total MP can be used for either group of spells known, but they are separate.

You wouldn't have a Scholar that casts Black Magic at CL7 and White at CL4 with the above build.

Same reason a Sorcerer/Wizard has two separate caster levels despite having the same lists of spells.