Some courses have prerequisites or courses you must successfully complete before enrolling in that course. Exceptions can be made with the instructor’s approval. If you enroll in a course in which you do not have the prerequisites without the instructor’s permission, you may be dis-enrolled. For college level courses, there is an assumption of college-level reading and writing skills, whether or not prerequisites are stated for a particular course. Corequisites are courses that must be taken during the same semester.