NB,
What you believe very strongly is irrelevant to law. There's a reason why the school didn't fight this. They and their attorneys know very well that they're in violation of established law and they'd lose the case and a lot of tax-payer money that ought to be used to actually educate students. If you actually think your very strong personal beliefs mean anything vs. the US Constitution, please file a lawsuit based on your beliefs and interpretations and let us know, so we can follow it.
There is a lot of leeway and protection for personal expression (moment of silence is appropriate) but don't confuse that with a government agency cramming any one specific religion down the throats of a totally captive audience. That is wrong and also happens to be against the law.
*****
Robustus, you are right on, but do not expect to convert to your view those whose positions are rooted not in law or logic, but in their emotions!