Not too sure if you're considering Factions, but there is the Arcaniss Institute in Dalaran. A faction dedicated to the study and development of magic and the arcane. Though they are run currently by a full-blood elf and a dragon, they allow anyone of any race or religion to study and work with them.

They aren't associated with any Kingdom however so I'm not too sure if that part would suit or not, just thought I'd offer it up either way.