On the Meiji Constitution assignment, I gave grades and plus grades (A+, A, B+, B, etc.) Here’s how the grade scale worked out, approximately:
| Grade Level | distribution |
| A | 10% |
| B | 15% |
| C | 30% |
| D | 20% |
| F | 25% |
| Did not Attempt | 50% |
I know that adds up to 150%. The DNA ratio is for the whole class. The grade distributions include only students who turned in the assignment. DNA is a grade of zero.