Less so for Spaniards as far as I've seen, but historically Italians (particularly southern ones) and Greeks have had a hard time being accepted into the "white" demographic/culture, since they can get pretty dark skinned. The Irish had issues with this too, but tumblr loves to completely ignore the oppression and discrimination of the Irish and other Celtic peoples' because their skin ain't dark, and skintone is the only thing that matters to them.
But in reference to the original issue, what a surprise that a school located in the western hemisphere teaches the western art traditions. If you went to a Japanese school, I'm sure the art classes there would teach Japanese traditions. There's no ban on you looking for and learning how to learn other artistic types if you don't like the one you've got at hand. But that requires effort.