Those are low graduation numbers for the Ivy League. These are not "weed out" schools like a lot of big state universities.
Still at a Disadvantage Black students who graduate from institutions like Harvard University are about as likely to get a well-paid job as a white graduate from a less-selective state university, new study finds. “Most people would expect that if you could overcome social disadvantages and make it to Harvard against all odds, you’d be pretty set no matter what, but this experiment finds that there are still gaps,” said S. Michael Gaddis, the author of the paper and the Robert Wood Foundation Scholar in Health Policy at the University of Michigan. “Once you get out, you still have to deal with other human beings who have preconceived notions and misguided stereotypes about why you were able to go to this college.” ____________ Which is their natural level if they were an affirmative action admission. If they weren't they're being penalized.
You have a problem with faulty thinking. Employment is a low bar for people who have what it takes to be perfectly good students at a state university, which describes most black Ivy Leaguers. The question is what kind of jobs do they have relative to their supposed education.