Earlier quoted context omitted.
If your pulling in ~10,000$ per person in tuition, and the average person takes 5 classes with a class size of 30 that's. 60,000$ per professor per year if they teach 4 classes, 75,000$ per professor if they teach 5 and 90k & 6 classes before expenses per class. So, the only way for that to work out is some other subsidies. However, lectures allow you to use TA's to more cheaply expand class sizes and might make it p…
But Brown's tuition for out of state students is just under $50,000 per year per student. Does that mean they could be paying those professors $300,000?
Further, just having a teacher without a classroom is not going to get you very far. Still, assuming the average student pays 1/2 that much per year they can probably cut the costs significantly.