Fall 2018<BR><BR>

Monday Aug 20: Classes start<BR>
Monday Sep 3: Last day to cancel a course assignment without it
appearing on record<BR>
Monday Sep 17: Last day to withdraw a course with a grade of W or to
add/modify a course with instructor and advisor signature<BR>
Friday Oct 23: Last day to withdraw from a course with  a W or
WF grade<BR>  
Finals week: Dec 10-15 <BR

For details, see http://www.purdue.edu/registrar/calendars/ under
"Drop/Add deadlines".