A person who does not desire credit in a course may attend class as an auditor on approval of the instructor. Auditors enroll for the course and pay the same fee as the students enrolled for credit. The names of auditors are entered on the class roster as evidence of their eligibility to attend class. A student who enrolls as an auditor in a course may change to credit status the first week of classes and may change from credit status to auditor during the first three weeks of classes.