Mexicans are not a race, so Zubs can't be a racist.
If you look at the school rankings there is a high correlation based on the ethnic background of the students. Anybody that looks at school rankings knows it and most here talk openly about it because it's so completely obvious, so why pretend it's not a thing?
We can't have the feelings of poor Mexican kids hurt by a random internet stranger, but I'm betting in real life you don't do a damn thing for poor kids, Mexican or not. Am I right?