If you believe you can separate private schooling from the
pre-existing conditions you are deluded.
I don't.
Again like the other poster you're not making any sense, private school is beneficial , but that benefit has no meaning , that's bollocks.
Like I explained in another post, Women get paid less than men on average, this is a fact. I take-away from that institutional and structural in-equality, a whole host of reasons, a woman hater would infer its because women are inferor to men.
The stat is still MEANINGFUL.
The private school my children attended in London, I'd say white, affluent , clever professionals were a minority, there were many non-white parents, parents of all colours who were hustling in two, or three jobs to pay fees, parents who had no wealth at all, mortgaged up to the hilt, or relying on grandparents and aunts and uncles to pay fees, they came from all types of housing, renting socal housing to large mansions.
Of course private education goes hand in hand with wealthy , privilege , and as you allude to there are many factors why private schools outperform state , but whatever the childs background, they will on average have a NINETY PERCENT bigger spend than if they stayed in the state school system, that is a huge advantage that's way too big to ignore, whatever the childs background , colour, class or whatever.