Get your money's worth?
Oh yeah. What I learned was that a professor demanding and interesting enough could motivate me to go on field trips to draw stuff. I am not a particularly talented artist (snork! - yeah, like I'm not a particularly talented NFL defensive lineman) but he taught me what I was after, to be reasonably accurate. And also something a lot more precious: to see.
It is rather amusing to recall why I was in that class. It wasn't an elective - I was a Microbiology major and back in the 70's you still had to be able to draw what you saw. In a microscope. For younger FReepers: a microscope is an old-fashioned instrument that had glass and slides and oil and stuff and you looked through it with your eyeball. And you couldn't take pictures with your cellphone. And yes, Louis Pasteur was my lab partner... ;-)