...occurs upon approval of your completed degree requirements. Diplomas are mailed up to six weeks following review of your records at the completion of your final term of study (December, January, May, or August).
...is the ceremony celebrating your graduation. Diplomas are not distributed at Commencement. Commencement is held once a year, each May, at the close of the spring semester. Eligibility to participate in commencement each year is determined by the Registrar's Office or the Graduate School. Eligible students who apply for their degrees by the posted deadlines will receive eligibility notice by mail during spring break.
...see the Helpful Contacts page for the corresponding department.