(CNN) -- A new policy at Tufts University prohibits students in dorms from having sex while their roommate is in the room, according to the university's 2009-2010 student handbook.
A school spokeswoman says students have expressed concerns over roommate having sex in the dorms.
The Massachusetts university's formal rule also bars so-called "sexiling" -- exiling a roommate from the room so the other roommate can engage in sexual activity.
The new policy "is really about consideration and respect for others and the need for students to be mindful of their roommates' need for privacy, study and sleep," university spokeswoman Kim Thurler told CNN.
She said while she did not have an exact number of complaints from students about their roommates' behavior, "over the last few years, the Office of Residential Life and Learning received approximately a dozen expressions of concern about this issue."
Callie Morton, a freshman at Tufts, told CNN affiliate WHDH-TV, "If someone is going to go and have sex while their roommate is in the room, I mean I think that's kind of gross. I think it's kind of funny that they would have to make a rule about it." Watch Tufts students talk about policy »
The new guidelines for students hosting overnight guests say, "You may not engage in sexual activity while your roommate is present in the room. And sexual activity within your assigned room should not ever deprive your roommate(s) of privacy, study, or sleep time."
Other students agree that the new rule is going to be difficult to implement.
"I don't think it's something that can really be enforced per se," an unidentified Tufts University student told WHDH. "I don't understand how that's going to work."
Thurler explained that if a problem is identified and brought to the attention of residence officials, the university will help the affected student have a conversation with his/her roommate to address the situation.
"In some cases, we might intervene on behalf of the student," Thurler said, "and speak with their roommate directly and explain what is expected of them while they live in the residence halls."
Thurler wouldn't comment on possible disciplinary action by the university if a student breaks the rules.
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