The issue really isn't the standard of teaching being any better at private schools than at a state school. The bigger issue is the relationships that form between the groups of the richest in society at private schools. These relationships mean that once they have left school and go into the world of work they are going to have greater opportunity to find jobs through these relationships at the expense of those who were not able to go to private schools but may actually be more able to do that job.
This is also a huge problem in the world of sport, more so rugby, cricket and tennis than football, but private school often have deep seeded relationships with sports academy's meaning that their students are much more likely to get selected than their state school peers (certainly non-dependant on their ability). I've seen this first hand.
This was posted from The Student Room's iPhone/iPad App