A 6 corresponds to a grade of A+, A, A/A-, or A-

A 5 corresponds to a grade of B+, B+/B, or B

A 4 corresponds to a grade of B-, B-/C+, or C+

A grade of C is in between a 4 and a 3

A 3 corresponds to a grade of C-, C-/D+, or D+

A 2 corresponds to a grade of D, D/D-, or D-

A 1 corresponds to a grade of F+, F+/F, or F