Common American Grade Scales (10-Point vs 7-Point)
Standard Curricular Grade Boundaries Comparison
| Letter Grade | Standard 10-Point Scale | Strict 7-Point Scale | Collegiate 4.0 Points |
|---|---|---|---|
| A | 93% – 100% | 93% – 100% | 4.0 |
| A- | 90% – 92% | 90% – 92% | 3.7 |
| B+ | 87% – 89% | 89% – 92% | 3.3 |
| B | 83% – 86% | 85% – 88% | 3.0 |
| B- | 80% – 82% | 82% – 84% | 2.7 |
| C+ | 77% – 79% | 79% – 81% | 2.3 |
| C | 73% – 76% | 75% – 78% | 2.0 |
| C- | 70% – 72% | 70% – 74% | 1.7 |
| D | 60% – 66% | 65% – 69% | 1.0 |
| F | <60% | <65% | 0.0 |
- Always check your syllabus for exact course grading boundaries.
Related Grading Reference & Calculators
The standard conversion chart used across the majority of American middle schools, high schools, and universities.
A comprehensive reference mapping each letter grade to its corresponding quality point value across different academic course rigor levels.
Reference table defining collegiate letter grade criteria, minimum passing benchmarks, and Latin Honor GPA thresholds (Cum Laude, Magna Cum Laude, Summa Cum Laude).
Convert numerical test percentages into standard letter marks.
Translate class percentage directly into 4.0 quality points.
Continuous percentage ratios vs discrete letter grade tiers.
Step-by-step guide converting raw assignment points to percent.
10-point scales, 7-point scales, and percentage thresholds.
Authoritative References & Academic Standards
Vetted against official government, institutional, and collegiate guidelines
Comprehensive historical and institutional documentation of standard 10-point scales, percentage cutoffs, and GPA conversion tables.
National academic standards for undergraduate 4.0 quality points, credit-hour weighting, and transcript calculations.
State education agency standards defining 70% passing cutoffs, secondary course credit minimums, and standard assessment rules.