Here is a break down of the grades:

A+ = 98 - 100
A   = 95 - 97
A- = 92 - 94

B+ = 89 - 91
B   = 86 - 88
B- = 83 - 85

C+ = 80 - 82
C   = 77 - 79
C- = 74 - 76

N = 71 - 0

Health* and Handwriting Grades will be:

E =  Excellent
S = Satisfactory
U = Unsatisfactory