As a principal, I did not allow grades below 60 nor grades between 61-64. When a teacher gives 0-59, s/he has determined that a student does not deserve an opportunity to turn around. By 6-8 weeks into such a semester that kiddo could make 90s for the rest of the term and still fail the class. To those who say s/he deserves to fail, understand that you lack the heart of a teacher and should make a career elsewhere. Those people who give grades between 61-64 are much more interested in punitive “teaching” than anything else. They like to tweak the student more than teach the student. They should sell shoes.