Genevieve had a grade of 102 because of some extra points on an assignment she got 12/10 in her ELA class. But one day her teacher put in a grade, it was 32/32. So 100. Before the grade was put, she had 6 assignments with 100's, so A's. and only 1 assignment with B-. When her teacher put in the seventh grade of an A, her grade became a 101. Why did her grade go down if she got 32/32 (100) on that assignment?

* also, i dont know what to put for the subject of this so i just put english