Having spent most of my morning reading this thread, I have copied and intended to post on a large number of comments, but I won't.
However, I do want to say how much I dislike the sterotype private school parent illusion, of privilege.
I went to a state school, and a very poor performing comprehensive in the 70's, it changed from secondary modern as I went. My father had hardly no education, leaving school at 15, Mum went to the local grammar, but left at 16. No one in our family has ever been to University. I obtained the heady number of 4 O levels, and 4 CSE's, left school at 16, being told FE was a waste of time for me, as I wasn't clever enough. My Comp. had its first 6th form starting the year I left, with 20 pupils staying on, in a school of 1,500 pupils. I went straight to an office job and worked hard, which resulted eventually at a high level job within the BBC.
My dd is now at an idependent school, DH and I (he did go to university), moved her from her state school at Yr 2, last September. The reason because it was failing her, she had switched off, demotivated and couldn't read. This is an 'outstanding' catholic school. We were told she may have learning difficulties, because of lack of concentration and focus. A year later and £9k lighter (my PT annual salary), we have her report, her exam results are slightly above average, she is motivated, working hard and can't wait to go into Yr3.
I wonder where she would have been if she had stayed where she was? The teacher there spent most of her time 'firefighting' in her class of 30, I offered to go in and help listen to kids read, because I thought it would ease the pressure! I saw five children who obviously need extra time and help with their behaviour making life difficult for the rest, who really want to learn. Those five particularly are being badly let down, as the process to put in place help takes so long.
I count myself very lucky we had the means to do something for our dd, but I feel bad for that teacher and those children still in what I can only call 'madness of a class'.
I make no apologies for opting out, my dd is my priority, but that doesn't make me selfish, uncaring or patronizing.
If you are lucky enough to have a state school that is fulfilling your childs needs, then bully for you, ours wasn't and we did something about it.