3x18 Cheating, Revelations and a Box of Doll Heads

Couple of things:
1) Nice to see them addressing how the husband died - and how it was an accident
2) Yeah, he was an tool back in the day and Dan has EVERY right to hate him for what he did to his Becky
3) WTF?!?! I wear special glasses while working on the computer. My glasses MIGHT reflect the computer screen. NOT the room around me. And not something written in on a pad that is being held 10 feet away. And given the proctor is on a ZOOM window, which is about 3x4 inches in size, how the HELL was he able to know that the Quadratic formula was being shown!?!!?!? Even if Mark was the ONLY one he was observing, there is no way he could know that what was written on the pad....