Grade sheets should be returned at the conclusion of the course. All grades for WPDC courses are satisfactory/unsatisfactory (S/U) and should be mailed to the Administrative Specialist, 106 Withers/WTS, Richard W. Riley College of Education, Sport, and Human Sciences, Winthrop University, Rock Hill, SC 29733. Once grades are assigned, the instructor must sign the roster verifying the grades and mail within one week of the final class.