| Grade | Scale | Scale 2 | Grade Description | US Grade |
|---|---|---|---|---|
| O | 8,000 | 80,000 - 100,000 | Outstanding | A+ |
| A+ | 7,500 | 75,000 - 79,000 | Excellent | A |
| A | 7,000 | 70,000 - 74,000 | Very Good | A- |
| A- | 6,000 | 65,000 - 69,000 | Good | B+ |
| B+ | 5,000 | 60,000 - 64,000 | Fair | B |
| B | 4,000 | 55,000 - 59,000 | Acceptable | BC |
| B- | 3,000 | 50,000 - 54,000 | Marginal | C |
| F | 0,000 | 0,000 - 49,000 | Fail | F |