30 question test grading scale

Every score on a 30-question test converted to a percentage and letter grade, plus how many you can miss for each grade.

How many can you miss?

GradeMinimum scoreQuestions you can miss
A (90%)27 out of 303
B (80%)24 out of 306
C (70%)21 out of 309
D (60%)18 out of 3012

Full 30-question score chart

CorrectMissedPercentageLetter grade
300100%A+
29196.67%A
28293.33%A
27390%A-
26486.67%B
25583.33%B
24680%B-
23776.67%C
22873.33%C
21970%C-
201066.67%D
191163.33%D
181260%D-
171356.67%F
161453.33%F
151550%F
141646.67%F
131743.33%F
121840%F
111936.67%F
102033.33%F
92130%F
82226.67%F
72323.33%F
62420%F
52516.67%F
42613.33%F
32710%F
2286.67%F
1293.33%F
0300%F

Other test sizes

Frequently Asked Questions