Grading Scales Explained
Not all schools use the same cutoffs. Here are the most common scales at US high schools and colleges.
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Quick Answer
On the standard US scale: 90–100 = A, 80–89 = B, 70–79 = C, 60–69 = D, below 60 = F. On the strict 10-point scale (used by most colleges), B starts at 83% and A− starts at 90%.
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| Percentage | Letter | GPA | Classification |
|---|---|---|---|
| 93–100% | A | 4.0 | Excellent |
| 90–92% | A− | 3.7 | Excellent |
| 87–89% | B+ | 3.3 | Good |
| 83–86% | B | 3.0 | Good |
| 80–82% | B− | 2.7 | Good |
| 77–79% | C+ | 2.3 | Average |
| 73–76% | C | 2.0 | Average |
| 70–72% | C− | 1.7 | Average |
| 60–69% | D | 1.0–1.3 | Below Avg |
| 0–59% | F | 0.0 | Failing |
Standard Scale (90/80/70 — Common in High School)
| Percentage | Letter | GPA Points |
|---|---|---|
| 90–100% | A | 4.0 |
| 80–89% | B | 3.0 |
| 70–79% | C | 2.0 |
| 60–69% | D | 1.0 |
| 0–59% | F | 0.0 |