What Grade Is 20 out of 20?
20 out of 20 is 100% — an A+ on the standard US scale, an excellent score.
- Percentage100%
- Letter gradeA+
- Missed0 pts
- For an A (90%)18/20
Score breakdown for a 20-point test
| Score | Percent | Letter |
|---|---|---|
| 18/20 | 90% | A- |
| 16/20 | 80% | B- |
| 14/20 | 70% | C- |
| 20/20 | 100% | A+ |
How this is calculated
Divide the points earned by the points possible and multiply by 100: 20 ÷ 20 × 100 = 100%. On the common 10-point-band scale that lands in the A+ range.
Common questions
How are letter grades calculated from percentages?
Most US schools map percentages to letters in 10-point bands: 90–100 is an A range, 80–89 a B range, 70–79 a C range, 60–69 a D range, and below 60 an F. Plus/minus splits each band roughly in thirds (e.g. 90–92 = A-, 93–96 = A, 97+ = A+). Individual schools and professors can and do vary the cutoffs.
Do withdrawals (W) hurt my GPA?
A W doesn't enter GPA math at all — that's usually the point of withdrawing. It does appear on the transcript, and a pattern of many Ws can raise questions in competitive admissions. One or two strategic withdrawals to protect a GPA is common and rarely damaging.