Earlier quoted context omitted.
A point is reached in that any improvement in fairness to one group will decrease fairness to another. For example, I'm bald. That's unfair. At some point, one has to just accept it and move on.
I fail to see how the educational system has reached the end of any possible or conceivable improvement. I find it very very unlikely that 2022 USA is the end of history (but Mr Fukuyama might like a word with you :p) Also, as a fellow man afflicted with male-pattern baldness, I wouldn't dream of comparing that with the injustices discussed in this thread.
At least the public school has not made any objective improvement since around 1970 or so. That's pretty good evidence that that system cannot get any better.