A New Hampshire prep school that boasts a glittering roster of alumni — including the current secretary of state — is expected to be cast in a harsh light during the upcoming trial of a recent graduate on charges of raping a 15-year-old at the school.

Nineteen-year-old Owen Labrie of Tunbridge, Vermont, has pleaded not guilty to multiple charges in what police say was a sexual assault two days before he graduated in from St. Paul's School in 2014.

Authorities say the assault stemmed from a tradition of sexual conquest at the school known as "Senior Salute," in which senior males try to take the virginity of younger girls before the school year ends.

Jury selection is scheduled to begin Monday in Merrimack Superior Court in Concord.