Early 40's private school (generations of private school), 2 good degrees. Civil servant £30k but flexible hours, WFH etc. I took 10 years out of ft work to retrain and look after my DC. If I hadn't I'd be on £50k plus by now. I turned down taking over the family business. My ds is on a 6 figure sum, in sales. Her education is no better because of her schooling.
I could easily be earning 6 figures if I was based in London and ran my own consultancy (used to do this but not family friendly) but it would be to the detriment of my family life and cost of living etc would wipe out any gain made.
DH late 40's, went to a deprived, rough, comprehensive school, got bullied etc. Went to uni and did well. He's on 50k+ a year in finance and could easily be earning 6 figures if we lived in SE.
We are comfortable, we have a 4 bed house, garden, cars and we live within our salaries while also managing to save some to help our kids out. We live in a beautiful area of the UK.
My DC are first generation of my family not going to private school. We could send our DC to private school, but in doing so we would sacrife our ability to help them buy a house, support further education, travel, financial support them later in life. We have chosen to be proactive in their education. We access tutors when we need to and we're saving up a nest egg for each of them to try and give them a good financial start.
My cousin's both privately educated (very well renowned school), moved to London lived there for 10 years earning the big money but couldn't get out. Both moved out eventually when they had families. One commutes in but to the detriment of his family and he hates it but it trapped (his own words). The other is now similar to us in terms of earning potential and financial security.
There is more to life than money. We earn enough to be comfortable, our schooling had nothing to do with it. It was the support of our families and the financial security they passed onto us that's made the difference.