re: Teacher says she was fired for giving zeroes to students who didn't turn in their work

My dad quit teaching because of this type of stuff. His final straw was discipline. Had a bad student who he continually sent to the office. Office refused to do anything because there was a policy not to suspend or expel kids. No expulsions means higher scores for the school. Keep the pieces of shite around and push them through to make it look like you fixed the problems.