How we calculated grades

Grading Rubric
Number of Points Letter Grade
Greater than or Equal to: But Less than:
105 146.5 A+
95 105 A
87 95 A-
79 87 B+
71 79 B
63 71 B-
55 63 C+
47 55 C
39 47 C-
31 39 D+
23 31 D
15 23 D-
0 15 F