CONCORD, N.H. (AP) — A graduate of an exclusive New England prep school was cleared of rape but convicted Friday of lesser sex offenses against a 15-year-old freshman girl in a case that exposed a tradition in which seniors competed to see how many younger students they could have sex with. The scandal cast a harsh light on the 159-year-old boarding school that has long been a training ground for America's elite. Prosecutors said the rape was part of Senior Salute, which Labrie described to detectives as a competition in which graduating seniors tried to have sex with underclassmen and kept score on a wall behind a set of washing machines. [...] it found Labrie guilty of having sex with an underage girl. [...] the girl's family lashed out at the prep school, saying in a statement: We still feel betrayed that St.