MADISON — Drew University says in a legal filing made Monday it didn't mistreat a male student accused of sexually assaulting a classmate last year — and says the student's lawsuit alleging sexual discrimination should be tossed out.

Student Kevin Parisi was never charged with any crime related to the sex assault claim, and the school ultimately found him not responsible. His accuser notified police of the alleged sexual assault, but then never came to police headquarters to give a further statement, and the case was eventually closed, police have told NJ.com.

But he alleges in a federal lawsuit Drew's investigation derailed his academic career, and his prospects for a good life secured by a college education.

During the three-month investigation, he was barred from student housing and other campus facilities other than his classrooms and a cafeteria, which he says forced him to sleep on the "on the filthy floor" of a nearby apartment's kitchen, aggravating his anxiety and digestive disorders. hat led to his grades slipping, and his eventual academic suspension, his lawsuit alleges.

And he alleges the investigation went on too long, citing university regulations saying investigations and hearings about alleged sexual harassment or sexual misconduct should be concluded within 15 days — though the policy does allow for extensions.

Treatment of those accused of sexual misconduct, he alleges in the suit, is inherently biased against men since more men than women face such allegations.

"Male respondents in sexual misconduct cases at defendant Drew are discriminated against solely on the basis of sex. They are invariably subjected to discipline without the benefit of due process," he says in his suit.

In a motion to dismiss the lawsuit filed Monday, Drew argues Parisi hasn't made arguments that on their face justify the suit — noting repeatedly he was eventually found not responsible for any wrongdoing.

Drew argues that Parisi's lawsuit jumps to the conclusion the school acted with gender bias, and doesn't show evidence of inconsistent outcomes or selective enforcement in the way it applies its rules.

"The notion that removal of an individual who has been accused of sexual assault from proximity to his alleged victim raises any suggestion that such action was motivated by gender bias is pure, unsubstantiated speculation" and not a sound basis for the court to grant relief, Drew wrote.

Parisi also acknowledged in his suit the school's investigation was delayed because of police involvement. Again, Drew says, Parisi fails to show evidence of gender bias as a motivating factor.

Parisi's lawsuit, in addition to alleging sexual discrimination, also names his accuser and her boyfriend — whom he says lied about a consensual night of sex Parisi and the accuser had after she and her boyfriend split up. The accuser had hoped to return to her boyfriend and didn't want him to know about the sex, he says. Parisi says his accuser admitted as much to a close friend, and tried to get that friend to lie as well.

And it makes several other related claims against Drew, all of which the school also says should be dismissed. He argues the school breached its contract with him by failing to comply with its own policies, which he also says aren't written in a way adequate to protect men accused of sexual misconduct.

But Drew says New Jersey law establishes the relationship between a student and a school shouldn't be viewed in purely contractual ones, and says schools have broad discretion so long as their actions generally conform to their rules. Parisi was given reasonable notice of the allegations and a fair hearing, Drew says in its motion to dismiss. And Parisi hasn't laid out specific contractual obligations he and Drew were bound to follow, the school says.

Parisi alleges the school committed consumer fraud by not following its own regulations — but the school argues the Consumer Fraud Act doesn't apply to it.

Drew also says it inflicted no intentional emotional distress, and rebuts a claim it acted negligently by saying such claims are barred under the state's Charitable Immunity Act.

In an email to NJ.com last month, Drew University spokeswoman Elizabeth Moore said the school was "confident that the university behaved lawfully and appropriately and we are vigorously defending the allegations."