Social mobility is going backwards - the Sutton trust found that. In the 60s the poor clever child had the grammar school route which is now denied them. They were plucked from the sink estate into a middle class life in a sense. now it may be going backwards because all the very not clever people are going to stay where they are because the bright poor ones have moved up so eventually (now even) you've got the dregs who will stay there genetically and the rest who have already risen up - one theory but I doubt that's the entire answer as IQ tends to move towards the mean etc.
"My question to you is (as you weren't around when I was thrashing this dilemma out on MN), if money was tight would you still do it? Would you work nights/'round the clock if things were different to give your children the same opportunities that you can apparently easily afford?"
Ah but this is the interesting point. I often do work extremely hard and sometimes all night but that's more because I love the work than anything else. I worked 23 hours the other weekend although I didn't need to to earn the school fees.
I suppose I'd try to think smart if money were tight. My children's father taught at a school where one of them went so we paid 15% fees. A friend has a son just starting at his other half's school and they are just paying 15% of school fees because of a teacher discount. There are other ways to get into good fee paying schools too. I might if I were poor use our musical genes which seem to mean most of us get 3 or 4 grade 8s, perfect pitch is amongst us and we seem able to sight sing etc without too much effort so if I were very poor I suppose i would have just put a bit more effort into getting a child a music scholarship (one of ours did get one but more could have if I'd have put in more parental effort).
My parents went to state grammars in the 1930s. But my siblings and I went to fee paying schools and all 9 cousins are at them on my side of the family It will be interseting to compare the life consequences for the cousins on the other side who are in the state sector and have regional accents and indeed when we met my mother's famly at her funeral from whom she'd grown mostly apart over the years it was a massive class and income gulf - lovely people and some quite clever but like a completely different world achieved by in effect her brains really, that's what got her where she got in a generation and the fact she worked.
Or would a good state school suffice?