Tucker Reed, who has blogged extensively about her alleged rape, said that she informed USC officials about the incident in December 2012, after she told police. But school officials told Reed, who recently finished her junior year, that they could not do anything because there was not enough evidence.
"The process made me feel raped a second time," Reed said at a news conference on USC's campus.
Reed and other alleged victims filed a complaint with the U.S. Department of Education in May detailing 100 cases.
The case is the latest in a series of investigations looking at sexual assault allegations at colleges and universities throughout the nation, including reported cases at Occidental College and Dartmouth University.