Graduation ceremonies at Washington University in St. Louis, Missouri, United States - 20 May 2011

Mandatory Credit: Photo by Bill Greenblatt/UPI/Shutterstock (12351347e) Students graduating in the Arts and Sciences Department enjoy reviewing photos during commencement ceremonies at Washington University in St. Louis on May 20, 2011. 2600 students participated in the 150th commencement. Graduation ceremonies at Washington University in St. Louis, Missouri, United States - 20 May 2011