EZ Grader Chart
15 Question Grade Chart
Find the percentage and letter grade for every number wrong on a 15-question test or quiz.
Formula
Grade % = (questions correct ÷ 15) × 100
Each question is worth 6.67 points.
| # Wrong | # Correct | Score | Grade |
|---|---|---|---|
| 0 | 15 | 100% | A+ |
| 1 | 14 | 93.3% | A |
| 2 | 13 | 86.7% | B |
| 3 | 12 | 80% | B- |
| 4 | 11 | 73.3% | C |
| 5 | 10 | 66.7% | D |
| 6 | 9 | 60% | D- |
| 7 | 8 | 53.3% | F |
| 8 | 7 | 46.7% | F |
| 9 | 6 | 40% | F |
| 10 | 5 | 33.3% | F |
| 11 | 4 | 26.7% | F |
| 12 | 3 | 20% | F |
| 13 | 2 | 13.3% | F |
| 14 | 1 | 6.7% | F |
| 15 | 0 | 0% | F |
Common questions
What grade is 1 wrong out of 15?
Missing 1 out of 15 questions is 14/15 = 93.3%, which is a A.
What grade is 3 wrong out of 15?
Missing 3 out of 15 is 12/15 = 80%, a B- on a standard 10-point scale.
How many can you miss out of 15 and still pass?
To keep 60% (D-) you can miss up to 6 questions out of 15. For a 70% (C-) you can miss 4.
How do you calculate a test grade?
Divide the number correct by the total questions and multiply by 100. Example: 22 correct out of 25 = 22 ÷ 25 × 100 = 88%.