\r\n\r\nThere's a reason prayer is illegal in schools. Even if the students initiate it and it's not "required". In the northeast or on the west coast, the ones doing the praying would probably get some funny looks, but mostly they'd be ignored. In the bible belt, kids who don't join in get bricks through the front windows that night. That's if they're lucky enough not to just get beat up after school.
Voluntary prayer isn't illegal, it's Constitutionally protected. Not all school administrators seem to be aware of this, but that's their problem.
\r\n\r\nI grew up in West-by-God Virginia, then did six years in Virginia, now one year into Kansas. And, oddly enough, I've never had trouble from the religious folk.