Once again, due to some baffling alignment of the cosmos, this isn't the only high school in America that decided to nickname their school a derogatory term for Peter Dinklage. Freeburg Community High School in Illinois also calls their sports team the Midgets, and they even sell apparel with the name on it. Their website urges you to "GET YOUR MIDGETS GEAR," which is simultaneously the greatest and worst possible way to phrase that sentence.
The Coachella Valley Arabs
There's one thousand and one things wrong with this.
Coachella Valley High School in Southern California has been parading out a snarling, bearded stereotype as its mascot since the 1930s, when the name "the Arabs" was chosen because of the high concentration of Arab-American date farmers in the area and the low concentration of Arab-Americans that had any say in what the team was going to be named. The big-headed fellow even has a belly-dancing woman come out and perform for him at halftime, because holy shit, America.
The American Arab Anti-Discrimination Group has asked that the mascot be changed, to which the president of the Coachella Valley High School Alumni Association responded, "We have been using the snarling face to instill fear in the opponent ... but we can put a handsome dude in the mascot." Because it's only racist if the guy is ugly.