An eighth grade teacher in Florida named Diane Tirado got fired from her job because she refused to give partial credit to students who didn't even turn in their assignments. The school policy says the minimum grade is 50% . . . no zeroes allowed. But Tirado didn't think students should get partial credit for NO work, so they fired her. She didn't even get to see her class . . . she had to write them a message on the whiteboard.