A sum up of the MC's knowledge:
· Whether in or not, MC knows about Quinn's restaurant and knows that Camila and Riona are part of it. If buying, he also knows that Sarah and Melanie are too.
· Now, if he talked with Riona at the preps, he knows they are having trouble with money. And this is confirmed if talking with Quinn after helping her. At this point we also know the MC is trying to figure the whole thing out, but sucks at it (as per Quinn's words).
This was mostly the restaurant plot the MC knows.
· MC may have seen Mona storm out and Burke later leaving the same room, but there is nothing suggesting a connection with the restaurant. And Camila just tells the MC that Mona was "off doing a thing."
· After Mona leaves B&R, he knows she is missing. But only if staying with Josy and talking with Lily and Ashley at the pool does he get to know Mona has left B&R for good. But he has no idea as to why. He could think of something, but nothing that the MC can confirm.
· About the "free tuition", by EP8 even the MC thinks it's just a rumor and not a real thing. So that is out of the picture for him for the time being.
Despite all this, it's not an excuse for him not to tell Sage or someone else about the restaurant unless the MC has a reason for it. Be it he has no prove, which is true, or that he feels there's more to it and prefers to figure it out before acting, which can also be true. And maybe he has a good relationship with Quinn, making him wonder if what she does is really that wrong or more of a necessity to earn money.
So, what can happen at the Burkes' talk? It depends on what Stephen says. It's possible Maya mentions the free tuition and Burke asks her about it, him saying the necessary words for the MC to realize he is part of the puzzle too. Or maybe nothing happens. One thing is clear, as per everyone, the MC is dense af. At least most of the times.
Oh, and the MC has no idea about Quinn's drug deals. He just knows some of the students take drugs, but that's it. And I'm also expecting for all these plots to get known in Season 3, sparking trouble for all fraternities and sororities.