Your rhetoric above indicates to me that one of your goals in approaching a student's use of religious arguments in an assignment is to eliminate their use of such arguments, thereby removing religion from the classroom. You do NOT have that right, even under academic freedom. Also, a religious belief does not require the economic support of any priesthood. Check your logical fallacies list again. The fact that I and millions of people do willingly offer support to our priests does not lend credence to your implication that this support is a major, or even minor motivation of these priests.
Some people are bigger than that.