Went to a private high school & a private LAC. Receive alumni journals from each several times a year. Easy to know a lot about fellow classmates.
Lots of doctors, lawyers, business owners, etc. One even writes posts on a college website.
P.S. As a prep school with both boarding & day students, several PG classmates went to the US Naval Academy. Two of my football teammates became Navy Seals & died while serving. Both were kind, hardworking, trustworthy & talented. Decades later this still bothers me.
Many are very successful. We all enjoyed almost unlimited opportunities. I cannot say a bad word about my prep school or my classmates. Most interesting is the understanding & appreciation of others that comes with time & age.