Ive dealt with classes and have seen both types as well. One hypothesis is it's the energy between students and professor: Ones with higher energy in the class

Ive dealt with classes and have seen both types as well. One hypothesis is it's the energy between students and professor: Ones with higher energy in the class make change faster. In order to keep up, you have to think and do faster. Then I've been in classrooms where the professor did not want to be there. He knew it, the students knew it, and the interactions cemented it. The 'energy' was completely in the shitter. At best, it was rote memorisation and drudge work. Big surprise: most of the class slacked off and cheated, and did the 12 hour cram before tests. There is the 3rd category: in which the professor cares, but the student had to take this class for one reason or another. The general idea here is the student only minimally cares. I've seen this, where the student says to others "I dont care as long as I get a C." I'm guessing these are the most infuriating to professors.