United States Naval Academy graduates throw their hats at the conclusion of their commencement and commission ceremony at the Navy-Marine Corps Memorial Stadium in Annapolis.

A Naval Academy graduate celebrates after receiving his diploma and commission as President Barack Obama congratulates graduates during the commencement ceremony for the United States Naval Academy, at the Navy-Marine Corps Memorial Stadium in Annapolis, Md., on Friday.

Guests sit in the stands in the rain during the commencement ceremonyfor the United States Naval Academy in Annapolis. President Barack Obama urged new graduates to exhibit honor and courage in tackling incidents of sexual assault as they assume leadership positions in the military.

Ukrainian students celebrate the last day of school in Independence Square in Kiev, on May 24, 2013. Students across Ukraine celebrated the end of the academic year on Friday, traditionally called the "last bell".

Ukrainian students jump in a fountain in Independence Square during a gathering of school graduates in Kiev, on May 24, 2013, as they mark "last bell" celebrating the day they leave school.

Secondary school graduates play in a fountain as they celebrate the last day of school in Kiev on May 24, 2013.

Morehouse College alumni listen to President Barack Obama deliver his address under heavy rain at the school's 129th Commencement ceremony, May 19, in Atlanta.

Graduate Leland Shelton is congratulated as he is acknowledged by President Obama during the commencement address at Morehouse College. After a difficult childhood, Shelton is graduating Phi Beta Kappa and is on his way to Harvard Law School.

Graduates of the class of 2013 cheer during the commencement address.

Afghan national police officers run during their graduation ceremony.

Afghan national police officers pray during their graduation ceremony.

Inmate Abdul Cornelius is hugged by his mother Regina, left, and his sisters after receiving his General Equivalency Diploma along with 26 others at a graduation ceremony for inmates at the George Motchan Detention Center at New York City's Rikers Island correctional facility on June 26, 2012.

Guards stand next to inmates during the graduation ceremony at Rikers Island.

Inmate Arisleida Duarte applauds as she and others receive their diplomas.

Undocumented UCLA students stand in line at a graduation ceremony for UCLA "Dreamers", or Dream Act students, at a church near the campus in Los Angeles on Friday. Undocumented youths who came to the United States as children reacted with joy to an Obama administration rule change on Friday that could spare them deportation, although opponents slammed it as amnesty.

Wendy Ito, an undocumented UCLA student, prepares for a graduation ceremony for "Dreamers" or Dream Act students at a church near the campus in Los Angeles.

Francesca Baldi, 32, takes care of a seven-month-old baby in a private household in Rome on May 11. Baldi studied for five years at university in Pisa where she received a degree and a doctorate in literature and philosophy. She hoped to find a job as a teacher but has been working as a childminder for five months.

Jessica Mazza, a 28 year-old waitress, serves a customer at Novel cafe in Santa Monica, Calif. Mazza studied for five years at Ball State University where she received a degree in painting and business management. She hoped to find a job as an artist but has been working in the cafe for just under a year. Picture taken, April 24.

Denis Onyango Olang (right), a 26 year-old assistant cook, prepares food in a dimly lit kitchen at a hotel in Nairobi's Kibera slum in the Kenyan capital. Onyango Olang studied statistics and chemistry at Jomo Kenyatta University of Agriculture and Technology where he received a degree in science. He has been searching for permanent employment for two years but has decided to make a living working in the slums for the last eight months.

Tania Leon, a 29 year-old stewardess, poses for a picture inside a bus in Santiago de Compostela, Spain. Leon studied psychology at the University of Santiago de Compostela and received a degree in 2006. She was hoping to find a job as a psychologist but has been working as a stewardess for the last two years.

Almin Dzafic, a 30 year-old waiter, serves customers in the Galerija Boris Smoje cafe in Sarajevo. Dzafic studied for four years at Sarajevo University where he received a degree in civil engineering. For the last four years he has tried to find a job in art restoration but has been working as a waiter for two years. He sees his future outside of Bosnia and Herzegovina because he can not find a job.

Wael Abo El Saoud, a 25 year-old farmer, harvests wheat on Miet Radie farm about 37 miles northeast of Cairo. Wael studied for four years at Benha University where he received a degree in commerce. He hoped to find a job as a bank accountant but has been working as a farmer for the last five years. He earns between 30 to 60 Egypt pounds a day but does not work all year round.

Francesco Foglia, 37, poses for a picture as he works as a street sweeper in downtown Rome. Foggia studied for six years at university in Rome where he received a degree and a doctorate in industrial chemistry. He hoped to find a job as a researcher but has been working as a street sweeper for Rome's municipality for two years. Picture taken on April 29.

Marcin Lubowicki, a 28 year-old deputy manager of a McDonald's restaurant, shows his university diploma in front of the fast food chain in the Arkadia shopping mall, in Warsaw. Lubowicki, who has degree in Russian language from Warsaw University, has been working for McDonald's since 2007. He is planning to stay in his job.

Air Force cadets celebrate during their graduation ceremony at the U.S. Air Force Academy in Colorado Springs, Colo. on May 23.

Graduates of U.S. Air Force class of 2012 celebrate as they are greeted by President Barack Obama during their graduation ceremony at the Air Force Academy in Colorado Springs, Colo. on May 23.

U.S. Air Force Academy Cadets, lower their heads during the Invocation at the start of the commencement ceremony on May 23 in Colorado Springs, Colo.

President Barack Obama salutes as he arrives to deliver commencement address at the U.S. Air Force Academy in Colorado Springs, Colo. on May 23.