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Paul Graham's assertion that 'parents send their kids to private schools to improve university admission standards' does not guarantee that 'kids from public schools are smarter than kids from private schools.' Some private schools have high admission standards, and these have better teachers and more motivated students than comparative public schools in the area. The existence of these counter-examples shows that Graham's reasoning doesn't hold. He also assumes that the public school students have studied less material, or easier material, than private school students, and are more motivated to learn. This isn't guaranteed; certain public school programs (like IB, mentioned by another commenter here) meet or exceed the curriculum standards by other private schools. In short, the wording of the Tweets in their current form demonstrate weak reasoning. However, to take a more charitable interpretation, it's true that other private schools let anyone in who can pay the tuition, while also having less dedicated teachers and unmotivated students compared to public schools (especially public schools with high admission standards). Using more precise language, it can be altered to roughly: "motivated but less-privileged students can outcompete less motivated, more-privileged students in university." This is a more interesting assertion, but it also depends on the amount of privilege (e.g. some privileged students get an apartment with near-zero commute to the university, lots of cash, the best tutors, etc.). Life isn't truly meritocratic, but you try to do the best you can with the cards you're dealt. |
You are correct. However, it does mathematically guarantee that 'kids from public schools are smarter than kids from private schools at any given university (except, maybe, one of HYPMCS)'
In any competitive market, from the perspective of a market actor, independent selected-for variables will appear to be inversely correlated.