I'll not comment on the wealthy thing except to say that it is just ridiculous.
The rest of it, however, I can more than understand. Not so much the different uniforms, but separating them by ability should definitely be done. When I was a kid there were up to four different levels of classes. We had GT (Gifted and Talented), A (Smart, but not gifted), B (Not so smart, but smarted than), Special Ed (We are talking short bus here). There was nothing wrong with this system. Somewhere along the line some bleeding heart moron decided that it would hurt the feelings of the lower level kids to be put in lower level classes. The answer? To lump them all together and deny the smarter kids a better education by dumbing down the classes for the slower kids. That is probably the biggest problem with the education system in America today.
I am speaking of the life of a man who knows that the world is not given by his fathers, but borrowed from his children; who has undertaken to cherish it and do it no damage, not because he is duty-bound, but because he loves the world and loves his children… - Wendell Berry, 1971