> People who haven't graduated high school are inferior. They're not less human, but they are incontrovertibly less able.

I didn't graduate from high school. I ran business groups, founded startups, exited, accumulated patents, and am usually considered articulate and capable.

Yes, the distribution of people who didn't graduate from high school are different from those who did. But you can measure the things you actually care about. High school education (or other educational attainment) is just one signal of a person's capability.