TU and ADP students who will be studying mathematics, science (including biology, biopsychology, chemistry, physics, and physics/engineering), economics and/or foreign language (Chinese, French, German, or Spanish) courses must often take an appropriate placement test prior to their enrollment in the first such course. The placement test will identify which course among several will provide an appropriate entrée into the field or will identify one or more prerequisites which must be satisfied prior to the student enrolling in a particular course of interest.

Prerequisites and co-requisites play a prominent role in the following discussion. These topics are discussed in more general terms in Sec. 6.11.