The U.S. Supreme Court will not hear a discrimination case filled by Christian college groups.

A Christian fraternity and sorority at San Diego State University challenged a school policy that forbids them from asking members to adhere to standards that include defining marriage as being between a man and a woman and abstaining from pre-marital sex.

A lower court ruled the university's "anti-discrimination" policy doesn't violate the Constitution.

That policy makes Christian groups on campus ineligible for student funding and other privileges, such as reserving office space for meetings, hanging posters on campus, and promoting their group on the university's website.

Alliance Defense Fund senior counsel David Cortman, who argued the case for the Christian groups, said the court's decision would allow the San Diego State University to "remain a stronghold of censorship."