Back in the day, I took a course in Astronomy, a subject which I enjoyed generally, I think I could have made an A on every test without going to class. But the professor was very entertaining, and the class was about 65% coed. The education majors had to take a "science" class, and this was it. There were about four gals in our dorm in the class, and I took to "tutoring" them (yes, they were all quite attractive, and I did end up dating one for a while).
It depressed me, the level of understanding they had about anything at all scientific was ... depressing. But they were cute.
I recall trying to teach them about the Doppler Effect by running up and down the hall.