| 1000–1999 | Introductory level (first year) |
| Survey, foundation, and introductory courses, normally with no prerequisites and designed primarily for students with no prior background |
| 2000–2999 | Intermediate level (sophomore/junior year) |
| Normally designed for sophomores and above but in some cases open to freshman majors in the department |
| 3000–3999 | Upper-intermediate level (junior year) |
| Designed primarily as courses for juniors; prerequisites are normally required, and these courses are prerequisites for advanced courses |
| 4000–4999 | Advanced level (senior year) |
| Designed primarily for juniors and seniors; also includes specialized courses such as research, capstone, and thesis |
