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Teachers: Can teachers round your grade up if you're just one point away from the next letter? - letter round pendant

Suppose you have a 93, which is only one place outside an A.
Can I add my professor at one point?

I feel bad I did not. Frankly, I have hard and he knows it. I can in class and always ask to review the problems with me.

How do you feel about that? (Teacher) if you want, why? (Has the student depends on effort, the school policy, etc. ..) If not, why not?