Now that I have had oxygen administered and have picked myself up off the floor I will actually answer the OP's question.
My parents were working-class, juggled jobs to make ends meet and the idea of a private education was never even hinted at for myself and my brother.
However, what I do take away from my upbringing - and my parents are both dead now - is a strong moral code; helping others, treating others as you would like to be treated, charity, tolerance, respect. And we were educated at the local c of e and primary and the, truly, comprehensive school in the town.
In answer to some of the posters points, i would say to february1970 "Independant schools can attract superb, experienced staff, not to mention that they have the advantage of removing disruptive pupils" - sounds like a case of ra, ra, ra, we're going to smash the oiks to me. Disruptive pupils? God forbid, send them to Borstal. And I know that the teachers who look after my children every day are qualified teachers.
And to ragged "I strongly resent the implied assertion that private must be better" Damn right, it is this that really riles me, "I am paying for it so therefore it must be better".
A last point of february1970 "Independent education does not usually mean "rich people" and "snobs", these children are simply stereotypes. Well, love, you're not exactly doing a lot do de-bunk that myth.
As for political convictions, again it is an individuals choice, and I would like to point out that yes I could afford private for my three, but I'm so glad that I send them to state school.