NB,
It's not about personal offense. It's about a violation of the laws of our country. And the outrage you describe belongs instead to the privileged religious majority in these communities. Apparently you and they believe is that it's ok to break the law and violate the our Constitution because it disagrees with your theocratic whims. The schools were not forced or bullied. The schools simply received one letter informing them that they were breaking the law and the schools agreed. It's ridiculous to suggest with any seriousness that informing a school that they are breaking the law is an attempt to "eliminate religion and any religious expression" LOL. Somehow, you and yours are oppressed for not being able to force a captive audience at a government function to endure a specific religious prayer through the PA even though it's completely against the law and Constitutional protections.
The school was not breaking the law.
Yes, the Supreme Court made a ruling citing separation of church and state which is not found anywhere in the constitution.
The Supreme Court also once ruled that a man could own another man as legal property. That is also not in the constitution. Was that the correct ruling or were they wrong?
The constitution simply says that Congress will not endorse nor prohibit religious expression. It doesn't say that people cannot voluntarily pray in public buildings. At one time, the U.S. Capitol was also used as a church building, hosting church services weekly. Just because the Supreme Court says separation of church and state is constitutional doesn't mean it is.
The school received a letter threatening a lawsuit. They do not have the money to fight it, so they had to stop even though they did nothing wrong or illegal.
I don't believe in forcing religious beliefs on to others against their will. However, I believe very strongly in free expression and the tolerance of others' right to express themselves. If one is intolerant of another person praying, then it's not the fault of the one saying the prayer.