It has always been human nature to want to run in like minded circles, the amount of money you have or earn is simply your ticket in. As people earn more , they move up the socio-economic ladder, and more often then not they move to a better location. Think the immigration to this country or think of the migrants crossing the Mediterranean, moving to a better location. Private schools simply concentrate those with similar backgrounds in one location. They take no money from the system, continue to support the public system, and end up often as not socializing with those not in private schools , as not everyone attend these schools . Just another article where those who have made money or inherited money are supposed to be demonized, for simply having more then anyone else.