His points:
Exam surveillance - He's talking about computer proctoring software, basically software that monitors that a student taking a test on a computer doesn't look away from the screen or go out of the picture (i.e., to cheat offscreen). He points out, quite correctly btw, that these shitty programs often have trouble recognizing ethnic or darker complexion faces. That's a real thing. I remember reading about ethnic students taking the Bar Exam and having to have their test footage manually reviewed because it reported them leaving the computer.
Zero-tolerance policies - Basically, he's saying that professors under zero tolerance regimes still have discretion to decide when to report, and when to overlook, a student having copied-and-pasted too many direct quotes. His point is that statistically, professors cut white students more slack than minority students, for various reasons, racism being a big one.
Fraternities and Sororities - Here's he's accusing frat boys and sorority bitches of getting an unfair advantage because minorities are, statistically, excluded from participation in Greek life (for racism, economic, etc. reasons) and, in case you didn't know, Frats and Sororities have huge databases of prior years midterms and final exams. If you're in a frat, then you can usually see the last decade's worth of exams for most of your classes and know exactly the kinds of course material that's likely to be tested and study accordingly. If minorities are less likely to be in Greek houses, then they don't have access to these databases.
As per usual, your racist Conservative twitterverse has sensationalized something that is, in fact, rather mundane observations.