The number of credits appearing on course records and registration cards may be preceded by a letter prefix as follows:
E
Course excluded from credit toward a degree; used for experiential
courses, i.e., supervision, practica, graduate, or teaching
assistantships. A grade of P or NC is given.
N
Course is audited, i.e., "not for credit." Examination is not
permitted; a final grade of S (satisfactory) or U (unsatisfactory) is
assigned.