Today I gave a class to 8 students, for 65$ an hour (3 hours course)
Believe me, it requires much effort, and that was barely the basic teaching them how to run the machine. Then if we have to talk about configuration during printing, the support material, how to design in a optimal way. I think we could give an entire 1-2 credits course. Yet, they will need to play with the machine to get the experience. Sitting there and listening won't make you good at printing.