My background's in education (infant development) but still... my style would be more likely to give guidelines and a purpose for an assignment. I'm guessing the instructor wants students to learn proper exposure instead of relying on adjusting exposure and brightness?? But that doesn't really explain it being OK to use auto, so I'm not sure what the instructor is going for here. Ask your teacher why, reread the syllabus and see if you can figure out the point of the assignment, etc.
I shoot film and have done darkroom work, and shoot digitally, and either way it could get time consuming to have to do a lot of adjustments to make up for mistakes, so I suppose there's something you're supposed to be learning... what, I'm not sure.
Maybe it's just this particular instructor (good, bad, whatever) and you'll need to ask and follow the guidelines as best you can and give appropriate feedback at the end of the course (assuming it's too late for Drop/Add if this is for credit). Or just stop going and you're out the money unfortunately I guess if this is for personal enrichment. Sometimes you just end up with the bad apple of the bunch.