A        93.33-100.0
A-       90.00-93.32  
B+       86.67-89.99
B         83.33-86.66
B-        80.00-83.32
C+       76.67-79.99
C         73.33-76.66
C-        70.00-73.32
D+        66.67-69.99
D          60.00-60.66
F           <60