Well, when you described yourself as a superwoman, Xenia, you were not wrong.
I'm certainly not so super and that's not sexist, just accurate.
I'm happy with the role I have - I honestly couldn't have chosen to do what you do as I view being able to be there for the kids, go to their assemblies/plays etc etc and spend time with them as more important and vastly more interesting than any job I could possibly have - but maybe your job really is that good or maybe what we find interesting is just rather different.
Not sure what you meant re sexism within marriage - it's not sexist for the parent who works shorter hours to do more of the children-related stuff, it's just a sensible allocation of limited time. In my home, I do more of the education stuff partly because that's my interest and my academics are better, but on the bits I can't do eg science, my dh fills in. Likewise, when I have a busy period at work, my dh does the lot. Sounds the same as you really.
I wasn't trying to suggest that you were 'blind to the lack of attention given to your children' - just to question your very definitely held and often-stated view that working long hours in order to pay for expensive education for your dcs was the best way to ensure your dcs were well-educated.
In fact, in your pot above, you have demolished your own theory - your dcs succeed not because you work every hour of the day and earn loads of dosh to pay for private schools. Your dcs succeed because, like me, you prioritise their education and devote time to them.
We are not so different after all, Xenia, despite your addiction to private schools. If truth be told, I'll admit to quite liking my dcs' teachers to be Oxbridge-educated too. As obviously she can get these in her state school.