Comment by saghm

I don't think that's equivalent. If you were responsible for trying to make sure each of those students were getting good grades, keeping track of each of their GPAs, and getting involved proactively whenever signs that someone's grades might be slipping, that might be comparable. There's a difference between "knowing something general about each person" and being able to keep track of the same general detail about all of them and not ever getting mixed up. If anything, I'd imagine that the facts known about each person were more likely to be things that stood out compared to the others rather than 200 difference instances of the same detail.