I’m not so sure wrong neighborhood/wrong family is that much of an issue in the US. There are a lot of routes out of that if you dig into athletics or schooling which higher iq people probably realize and tend to do. Even military can be a good choice. Full ride scholarships especially from marginalized backgrounds to qualified people really aren’t all that rare. Schools pride themselves on uplifting just that sort of student. And you can do military reserves and get school for free for the cost of the occasional drill, if you aren’t much of an athlete or scholar.