Yesterday, the Supreme Court agreed to hear Christian Legal Society v. Martinez, a case with important consequences for church-state separation.

The group, the Christian Legal Society, says it welcomes all students to participate in its activities. But it does not allow students to become voting members or to assume leadership positions unless they affirm what the group calls orthodox Christian beliefs and disavow “unrepentant participation in or advocacy of a sexually immoral lifestyle.” Such a lifestyle, the group says, includes “sexual conduct outside of marriage between a man and a woman.”

The law school, Hastings College of the Law in San Francisco, part of the University of California, allows some 60 recognized student groups to use meeting space, bulletin boards and the like so long as they agree to a policy that forbids discrimination on various grounds, including religion and sexual orientation. The school withdrew recognition from the Christian group after it refused to comply with the policy.

Hastings is a public university, and it has a clear policy requiring all student groups to be open to all comers. So, to make a long story short, the group, CLS sued and the case made its way to the Supreme Court.

At stake is whether or not tax dollars—your tax dollars—should go to fund a group which specifically excludes people based on religion or sexual orientation. The answer, in case you were wondering, is “no.”