Samford University (my sister's alma mater) has required convocation, which is sort of like chapel. Students have to earn a certain number of convocation credits to graduate—they scan your ID card to verify that you attended.
The code of conduct prohibits premarital sex, straight or gay. "Homosexual acts" used to be singled out for punishment, but that wording was dropped a few years back.
Also, social dancing on campus was prohibited until a few years ago—hence the long-running joke:
Q: Why don't Baptists believe in sex before marriage?
A: Because it might lead to dancing.
ETA Greeks at Samford:
http://samford.orgsync.com/GL_chapters