Ph.D. graduates are expected to defend their thesis before the end of the summer of the spring in which they wish to attend commencement. Students are then eligible to attend commencement ceremonies. Commencement is held once a year at the end of spring semester and is hosted by the College of Science and Engineering in cooperation with several other colleges. The announcement of the commencement date and time as well as the procedure to sign up to attend will be sent to the student’s x.500 account.