I'm with Custardo on this. I just think it is intrinsically unfair that one can buy an education and all the advantages that go with it.
It's not personal, my DCs are/were at state grammar schools so I am not jealous.
What matters is that those 'average' children in the private sector get much better results and thus places at top universities etc. And, understandably, that is what people are paying for (although not the only thing).
But what about those children who most need a good education, those who are the most deprived and needy? Not mine, or probably most of yours, but those who are shoved off to the worst schools because no-one else wants to go there?
I think this is where the education discussions get very emotive. Many posters who educate their children privately simply refuse to accept it is unfair.
It's unfair with the present grammar school system as well because of the tutoring which is only available to those with spare money, although I still contend there are a few (ahem) who get in without tutoring, but I've seen contempories of my children who are just as bright who have lost out to the heavily tutored children from private primary/prep schools.
The whole system needs a shake up.