School of Magic Apprentice is an arcanist wizard feat available to adventurers with the Arcane Implement Mastery feature, It was introduces in Class Compendium: Feats, allowing a regular arcanist to gain some access to the essentials version of Wizard.[Dr398:CC:F]
Wizards with this feat substitute the arcane implement mastery feature, and replace it witth the Apprentice Mage benefit associated with one of the schools of magic.