| Course Numbering SystemThe number of the course designates the level or classification a student must have to take the course. Some courses have prerequisites that must be completed before enrolling in those courses. 000 — Not available for degree credit100 — Introductory or basic freshman-level courses
 200 — Sophomores and qualified freshmen
 300 — Juniors and qualified sophomores
 400 — Seniors and qualified juniors
 500 — Graduate students, qualified seniors
 600 — Graduate students only
 700 — Graduate students only
 800 — Graduate students only
 900 — Doctoral students only
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