Under the previous numbering system, certain 200-level courses were approved by departments for graduate-level credit (and appeared in the Graduate Catalog). As part of the renumbering process and as required by accreditors, these courses were split into undergraduate-level and graduate-level versions. This split resulted in a host of new graduate courses, most at the 5000-level.
The undergraduate- and graduate-level versions of a course can be offered either simultaneously or separately. The courses must have separate syllabi to reflect the differential workloads expected of undergraduate and graduate students.