In past years, an outside individual or group performed the national anthem at Peirce's commencement.
"This year, we wanted to support the school president's vision in getting more students involved with the commencement exercises," said Rita Toliver-Roberts, dean of students. The team of staff and students that organizes commencement activities then came up with the idea of a contest.
An e-mail was sent to all Peirce students in mid-April, and there was a post on the school's commencement blog. Applicants auditioned in front of a panel of eight staff members and three of the school's social-media representatives, and videos of DeShields and four other contestants singing "The Star-Spangled Banner" were posted online for a student vote.
DeShields had missed the mass e-mail and didn't find out about the contest until the last day to register, April 30, when he was online looking for classes to take in the fall.
He said he had entered after his wife, Tatocka, encouraged him. "She oftentimes tells me that I sell myself short," he said.
Two weeks after auditioning, DeShields received word from one of the judges, who is his academic adviser, that he had won with 86 of the 194 votes.
DeShields said his kids were his inspiration for excelling in school.
"I push my kids when they're doing their homework, so I have to push myself. That would be hypocritical."
DeShields has been singing for as long as he can remember, he said. He began in his church choir at age 5 and later sang in the Overbrook Gospel Choir. He has also competed twice at the Apollo Theater in New York.
Since 2003, DeShields has sung the national anthem at a "Light the Night Walk" sponsored each October by the National Leukemia and Lymphoma Society.