Every morning when I was in school, we stood and said the Lord's prayer in home room before class. Arriving late for school one morning, I was going through the hallways to class as the prayer came over the speaker system, and standing outside of almost every classroom, were one or two students whose religion would not allow them to pray in school (Jehovah's Witnesses), or who aren't Christians and would not say the Lord's prayer. Our head cheerleader was in the hall (Bahai).
High school kids hate being "different". None of those kids like slipping out to the hall during prayers. All sat at the back of their respective home room classes so they could slip out discreetly each day. But they did it. Every school day of every school year from the time they were in kindergarten.
I would like for those kids to be sitting in their classrooms all day. To not be made to feel uncomfortable about their own faith. I think it's grossly unfair to force the most Christian prayer in our faith, on others.