I don't think the issue is whether or not it's offensive.

I am not in the least bit offended by people praying, or religious music, or religious displays, and I don't think many people are.

I just think it belongs in a private venue.

I wonder how everyone would feel if Maplewood High School found itself with a Muslim faculty member in charge of the brass band, who wanted to put on a concert of Muslim marching music (if there is such a thing).