There's a difference between student content and school content. The student is not a somewhat governmental institution so if the student created something religious as some sort of student created product like a talent show or something that's okay.
The difference is that regardless of who created it, the school clearly considers this banner or whatever their own content/message. It's clearly representing the school and not the student.
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My bracket wasn't good enough to beat SuperNiceDog's in the GameFAQS Rivalry Rumble. Congrats!
This is Yesmar.