Grading Scale for 20 Questions
Percent and letter grade for every score on a 20-question test.
On a 20-question test, each question is worth 5 points. This chart uses a standard plus/minus scale (A- at 90%, B- at 80%, C- at 70% and D- at 60%), so "an A" here means A- or better. Students need 18 right for an A, 16 for a B, 14 for a C and 12 for a D. They can miss 2 questions and still get an A, or 4 and still get a B.
- A18+ rightA- or better
- B16+ rightB- or better
- C14+ rightC- or better
- D12+ rightD- or better
At a glance
- Some exact grades never come up on this test (B+, C+ and D+), because each question moves the score 5 points.
- Of the 21 possible scores, 3 scores earn an A, 2 a B, 2 a C, 2 a D and 12 an F.
- The lowest score that isn't an F is 12 right (60%), a D-.
Examples
- 19 out of 20 is 95% (A)
- 17 out of 20 is 85% (B)
- 14 out of 20 is 70% (C-)
Customize this scale
Change the cutoffs, or add half points or bonus questions, in the free calculator.
Grade Table
| Right | Percentage | Grade |
|---|---|---|
| 20 | 100% | A |
| 19 | 95% | A |
| 18 | 90% | A- |
| 17 | 85% | B |
| 16 | 80% | B- |
| 15 | 75% | C |
| 14 | 70% | C- |
| 13 | 65% | D |
| 12 | 60% | D- |
| 11 | 55% | F |
| 10 | 50% | F |
| 9 | 45% | F |
| 8 | 40% | F |
| 7 | 35% | F |
| 6 | 30% | F |
| 5 | 25% | F |
| 4 | 20% | F |
| 3 | 15% | F |
| 2 | 10% | F |
| 1 | 5% | F |
| 0 | 0% | F |