I do not mean to be flippant or to appear to be cutesy, but as a retired teacher, I can honestly say that as long as students are in school, they will pray.  It may be just to know what's on a test, or that they not have the test.  They will pray:  openly or silently.

If the groups mentioned even think about suing, they are trying to take away not only the students' freedom of religious expression, but their freedom of speech as well.  Why do they not read the Constitution.