The University Registrar is responsible for the interpretation and enforcement of academic regulations; the explanation of course numbering is part of that charge. Please use the following table to determine the skill level of courses offered.
| Course Level | Number range |
| Undergraduate Only | 001-199 |
| Upperclass Undergraduate | 200-299 |
| Undergraduate Tutorials, Readings, Research | 300-349 |
| Upperclass Undergraduate & Graduate | 350-499 |
| Graduate Lectures | 500-699 |
| Graduate Seminars | 700-899 |
| Graduate Research, Tutorials, Readings | 900-998 |
| Thesis Research | 999 |
