I've learned through the years to be careful about assumptions with grading, especially if I'm viewing an online grade portal. Often times either there was a typo, half the assignment / test is recorded one day and the remainder at a later point in time, the assignment doesn't count toward the final grade, or some other such thing isn't shown because the grading software doesn't allow for it. If something doesn't appear to look right, I've learned just to send an e-mail to the teacher asking clarifying questions. 95% of the time it's a simple over sight or the software doesn't allow the teacher to denote all of the actual circumstances.
