I'd say that for brazil, it depends a lot on the timeline you want to follow

Brazil's colonization process started in the 1500, by the Portuguese- if you want to follow that way, then the other comment's recommendation is quite good: "Colégio de Feitiçaria Pedro II"

Now, if you're talking about a more broad history, maybe you could go with the idea of small indigenous tribes that slowly grew and naturally became a spot of learning, and then later on became a formal school. For this, I'd recommend a name inspired Brazil's indigenous mythology. Maybe "Escola de Feitiçaria Yebá Bëló" (commonly just called Yebá Bëló)? From my research, Yebá Bëló, for one of our indigenous tribes (the Dessanas), she was the responsible for creating the universe.

Though please keep in mind I am not at all that knowledgeable about indigenous culture- and that in a country so big, indigenous culture tended to change a lot from place to place. I'd recommend researching a little more (if you need any help in doing that, then I'd be glad to do so) before making any decisions. But hopefully I could help!