I don't for one minute believe that this banner was up for a student history or religious studies class. This just doesn't fit with the situation. I'd be fine with it if we were talking about a situation where it was part of some religious studies thing or history of law thing, but it wasn't. It still isn't. The only reason they put up the rest is because they were advised to do so by legal counsel. That is just wrong because it shows their intention had nothing to do with actually teaching what public schools are supposed to teach and everything to do with defending their religion from an imagined threat.