My accounting teacher likes to announce homework assignments in e-mail with no class warnings. He did it thrice this week (added an extra problem due Monday, extra problem Wednesday, and an assignment due Monday when there was originally no homework due). He announced the last one today at 1 am.
This is incredibly annoying, because I have other things to do with my other classes, and the other teachers don't leave me guessing with my work. With exams for two of my classes last week, extra unexpected homework (busywork, because I can't say learned anything from it) just added more stress.
I've never had a teacher do this, but then again, I was in community college before. Is this common in universities?