[@POOHEAD189] High Rock and Alinor are both homes to incredibly magic-oriented societies. The Mage's Guild was an Imperial institution, for all intents and purposes, it would be a bit silly to presume it was the only avenue available to societies where most individuals are magically inclined. Even Skyrim has the College of Winterhold, it wouldn't be unreasonable that there's a number of institutions available to the Breton and Altmer individuals in their homelands, or private tutors.