Transcript for Women accuse Dartmouth professors of sexual assault, harassment

Martha Raddatz, thanks very much. Allegations of a real-life animal house on an ivy league campus. Women claiming three professors at dartmouth sexually assaulted or harassed them and linsey Davis has more on the lawsuit. They say the school knew about it for years. Reporter: Good morning, Michael. They claim the college knew for more than a decade. The allegations are far ranking with claims that the women were leered at, groped and sexted and they tell us the professors hired lab tips based on their physical attractiveness and competed to have the hottest lab. This morning, the women behind that bombshell $70 million lawsuit filed against dartmouth college are speaking out. It was certainly a boys club environment, so it was a highly sexualized culture. Reporter: The complaint alleges that for more than a decade the ivy league university ignored sexual harassment from Todd Heatherton, William Kelley and Paul Whalen and describes them as forming a private predators' club with the women alleging that at times the professors groped them and conducted meetings at bars and invited students to hot tub parties. In March of 2015, the complaint states that William Kelley sexually assaulted Kristina Rapuano. I don't remember waking up the next morning and at that point bill Kelley told me we had sex. Reporter: The lawsuit claims this dates back to 2002. All seven of the plaintiffs were considered highly accomplished scientists, current and former students of dartmouth's brain signs department which the complaint compares to a 21st century animal house, a culture the women say the college was slow to address. The action they took was too late and too little. Reporter: In the fall dartmouth conducted an investigation and subsequently gave all three professors the option to resign or retire. In response to the lawsuit, dartmouth told ABC news, as a result of the misconduct we found earlier this year by the three pbs faculty members we took unprecedented steps toward revoking their tenure and terminating their employment. They stay they will respond with their own court filings. We reached out to all three professors. Only Heatherton responded and said he regrets any behavior that the women construed as being sexual. Wow. Serious case. Very serious. No joke. All right, thank you, linsey.

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