The inner city school for Los Angles that you're thinking of is likely Carson HS, which is near Compton. They were routinely a top-25 nationally ranked school in the 80s, with plenty of prospects. The second best one was probably Compton Dominguez.
Carson sounds right. I don't know if we ever tried to get anyone from there.
The '80's were pretty tough for African-American kids from the inner city schools. Prop 48 became a big deal and after a few years of recruiting and signing kids who lost a year of eligibility but otherwise admitted to school Jimmy Johnson stopped signing them. He said they became a real problem because it was hard to integrate them into the program, being on campus but I don't know if they could even practice. Obviously, they could not play in games. Even if not deemed a prop 48 based on test scores and grades, a lot of kids were otherwise not admitted to UM given the university's own requirements.
We backed off so many kids whom we could not get into school. Sometimes we sent them to prep schools, other times to JUCO. Other times, we just backed off and didn't offer. We could only hope that some would come back after prep school. If the kid went to JUCO it was less likely we would try to get them back.
Back then, some of my friends blamed the public schools in Dade for being very bad and not preparing kids. But there were so many kids from other places who were shaky on test scores or grades or both and we ended up not taking.
I do remember vaguely hearing about Jimmy's frustration with this in the '80's and I was worried he would get fed up and bail.
Eventually he did and of course the Dallas job was reason enough to leave but I'm sure it was not lost on Jimmy that he could simply evaluate personnel without worrying about a player meeting academic requirements, which he had to do in college recruiting.
When I mentioned inner city schools, most were predominantly minority and the athletes we tried to recruit were overwhelmingly African-American.
I always felt the inner city kids we recruited were in many ways cream of the crop given the disadvantages of coming from poorer backgrounds, too many exposed to bad things in the environment (drugs, crime, etc.), perhaps not having a good family environment, etc. These kids overcame so many external factors that they were exceptional in staying committed to a sport and to academics at least enough to be eligible in college.
Still, so many fell by the wayside, usually because of academics.
Today, it seems so many of the kids are better prepared academically.