Rough Grade Breaks for each exam:

Test 1 		Test 2		Final

A  > 32         A > 35          A > 78          
B  > 24         B > 26          B > 60
C  > 16         C > 18          C > 44
D  > 10         D > 12          D > 32

Rough Cumulative Scale (percent)

A > 72.5 %
B > 55.0 %
C > 39.0 %
D > 27.0 %

Fine Cumulative Scale, including "+" and "-" breaks 

Course Grading Scale (poiints)

A  > 195.8
A- > 181.3
B+ > 166.7
B  > 152.1
B- > 137.5
C+ > 125.8
C  > 114.2
C- > 97.5
D  > 67.5
F  < 67.5