William Singer appeared at the John Joseph Moakley United States Courthouse in Boston on Tuesday.
In a major college admissions scandal that laid bare the elaborate lengths some wealthy parents will go to get their children into competitive American universities, federal prosecutors charged 50 people on Tuesday in a brazen scheme to buy spots in the freshman classes at Yale, Stanford and other big-name schools.
Thirty-three well-heeled parents were charged in the case, including Hollywood celebrities and prominent business leaders, and prosecutors said there could be additional indictments to come.
Also implicated were top college athletic coaches, who were accused of accepting millions of dollars to help admit undeserving students to a wide variety of colleges, from the University of Texas at Austin to Wake Forest and Georgetown, by suggesting they were top athletes.
The parents included the television star Lori Loughlin and her husband, the fashion designer Mossimo Giannulli; the actress Felicity Huffman; and William E. McGlashan Jr., a partner at the private equity firm TPG, officials said.