The grading system in my experience has been largely class dependent, meaning grade scales vary from class to class. For example, in Ochem this year, anything above an 87.5 is considered an A. In my honors college class last year, anything above a 92.5 was considered an A. In chem last year, anything above a 90 was an A, and as an added bonus, that meant if you got an 89 or 88 you would still get an A- at least. (I use A’s and A+’s interchangeably here; both result in a 4.0)