These format issues for a copyediting class sound challenging. I'm glad you still learned a lot, and it served its purpose. I guess it would be hard to fail someone with the computer issues that made the class more difficult.
I had an accounting teacher that told everyone that if we always came to class and tried, he would not fail us. It was a night class from 6:30 to 9:30, and he took roll usually after the break. He used to suck on cough drops in class, and I would wonder if he was trying to cover up the booze on his breath, because he went to happy hour prior to class. The night of the class, a restaurant called Annabelles had 10 cent shrimp from 5 to 7, and all day $1.50 highballs. One of my roommates was a bartender there, and I ate shrimp one night before class, and I spotted him there. I told my roommate he was my teacher, and she said he always came in on Thursdays, and ate shrimp and drank one or two gin and tonics. He never seemed inebriated in class, but his face was always red, but that could just be his complexion. He was a great teacher.