The University of South Carolina draped a cap and gown on the chair where Samantha Josephson of Robbinsville would have sat during graduation Saturday.
The school also gave her parents a diploma.
Police said Josephson was killed in March after getting into a car she mistook for her Uber.
University President Harris Pastides spoke about the lessons learned from the tragedy.
"Asking what's my name before entering a ride share vehicle will save lives and must become as automatic to you as putting on your seat belt before getting behind the wheel," he said.
Police said Josephson got into a black car she thought was an Uber with Nathaniel David Rowland behind the wheel. She was abducted and killed.
Rowland has been charged with murder and kidnapping.
Josephson was planning on going to Drexel University's Thomas R. Kline School of Law after graduation.