Grade calculator for a 27-question test
On a 27-question test, each question is worth 3.7% and you can miss 2 for an A, 5 for a B, 8 for a C and 10 for a D (common 90/80/70/60 scale). One wrong answer is 96.3%.
27-question test grade chart
Score for every number of wrong answers, rounded to one decimal.
| Wrong | Right | Score | Letter |
|---|---|---|---|
| 0 | 27 | 100.0% | A |
| 1 | 26 | 96.3% | A |
| 2 | 25 | 92.6% | A |
| 3 | 24 | 88.9% | B |
| 4 | 23 | 85.2% | B |
| 5 | 22 | 81.5% | B |
| 6 | 21 | 77.8% | C |
| 7 | 20 | 74.1% | C |
| 8 | 19 | 70.4% | C |
| 9 | 18 | 66.7% | D |
| 10 | 17 | 63.0% | D |
| 11 | 16 | 59.3% | F |
| 12 | 15 | 55.6% | F |
| 13 | 14 | 51.9% | F |
| 14 | 13 | 48.1% | F |
| 15 | 12 | 44.4% | F |
| 16 | 11 | 40.7% | F |
| 17 | 10 | 37.0% | F |
| 18 | 9 | 33.3% | F |
| 19 | 8 | 29.6% | F |
| 20 | 7 | 25.9% | F |
| 21 | 6 | 22.2% | F |
| 22 | 5 | 18.5% | F |
| 23 | 4 | 14.8% | F |
| 24 | 3 | 11.1% | F |
| 25 | 2 | 7.4% | F |
| 26 | 1 | 3.7% | F |
| 27 | 0 | 0.0% | F |
The math: score = right answers ÷ 27 × 100. Each question is 100 ÷ 27 = 3.7 percentage points, so every wrong answer takes 3.7 points off a perfect 100%. Letters use the common 90/80/70/60 scale with no rounding up; your teacher may use different cutoffs, plus and minus grades or a curve, so check your school’s grading policy.