This is an interesting thread and something I have thought about in the past. maybe it has to do with location. But there are some random high schools in Texas, California, Florida, and others that basically have professional athletes in the leagues at all times along with senators, radio hosts, etc.. I have googled these high schools before. of course most are huge schools with 4K plus but still. I know huge schools in Indy that really never have had a big name go there, but then there are others like Lawrence North who had 2 lottery players in the same NBA draft.
I went to a high school of about 800 at the time I went there (up to around 1100 now). While I was there, we actually had a running back lead the entire nation in rushing with over 3,250 yards in 13 games. He missed 1 due to injury. But of course he was white, so not much interest. Although the offensive line had a lot to do with that with 3 or 4 guys playing college football I think. But I think only 1 went to a mid major program in the MAC. All others to small D II places.............. 38 power toss. They all knew it was coming but never could stop it...Was all about execution; everyone knew blocking assignments against all fronts. Fun times, it was like tecmo bowl. 78 yard run. 57 yard run. oops, 6 yard run.....I feel like Al Bundy.
But only somewhat notable person besides me to go to my high school is a guy that played football later on after I left and got drafted in the NFL. I think he is out of league now. never was a major contributor. What is crazy is my high school football team is basically "in it" every year and we won 2 state championships while I was there but no high major scholarship offers like to LSU, Alabama, etc. it was a private school that was 99% white.