There is a tiny proportion of 'private school kids' on TSR, you'll find many of them are pleasant, normal people. I don't see why you have to be so jealous of them? It's not a very nice trait.
As we all know, the only way you get into the universities listed above is by hard work. Sure, private education can give access to higher standards but at the end of the day it really is down to the individual person to put in that effort.