Long before Andrew Lohse became a pariah at Dartmouth College, he was just another scarily accomplished teenager with lofty ambitions. That fall, he enrolled at Dartmouth, where he had wanted to go for as long as he could remember. This, like the high salaries that Dartmouth graduates command — the sixth-highest in the country, according to the most recent estimates — is a point of pride. This did not go over well. At a college where two-thirds of the upperclassmen are members of Greek houses, fraternities essentially control the social life on campus.