[bluenose69]

The oral discussion does not scale well in large classes. The solution is to stop using essays for evaluation, relying on (supervised) examinations instead.

Of course, there will be complaints from many students. However, as a prof for decades, I can say that some will prefer an exam-based solution. This includes the students who are working their way through university and don't have much time for busy-work, along with students who write their essays themselves and get lower grades than those who do not.