This will never happen. I went to a private high school in Westchester with a $20k/year tuition. My high school was significantly better than most. But it was

This will never happen. I went to a private high school in Westchester with a $20k/year tuition. My high school was significantly better than most. But it was still "only" good, not extraordinary. The schools Gates and Zuckerberg attended have tuitions of $35k and $50k, respectively. They also have endowments larger than those of most universities, at $130 million and $1.2 billion respectively. There simply isn't enough money to fulfill your proposal. Educational achievement is strongly positively correlated with wealth. Wealth attracts itself; it centralizes and consolidates around more wealth. There are different things you could do to make most public high schools approximately as good as most private high schools. Stuyvesant is an exceptional public school in NYC; better than my own private high school, in my opinion. With significant, nontrivial socioeconomic reforms you could probably make most public high schools in NYC as good as Stuyvesant. Even achieving this would require vast amounts of money, probably more than you could convince politicians to tax. But you'll never get every single public school in the country to empower its students with the resources available to schools like Lakeside and Philips Exeter. It's infeasible. They may as well be research universities.