Three Harvard University sororities are objecting to a school policy that bans students in single-gender clubs from holding campus leadership positions.
The women in a joint letter to Harvard President Drew Faust say their organizations are unfairly being punished for the wrongdoings of men-only clubs.
The statement argues the sanctions will undermine the choices available to Harvard women.
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The sororities say the policy forces "women to choose between the opportunity to have supportive, empowering women-only spaces and external leadership opportunities."
The university's governing board last week approved a May 2016 rule saying students who join single-gender clubs are forbidden from leading campus groups or serving as sports team captains. The rule also says the university, based in Cambridge, won't back those students for major scholarships.
A university spokeswoman refused comment.