Then the school punished the student, not the person who started the prayer. This was followed by a large group of the student body joining in exercising their rights by also reciting the Lord's Prayer. The 1st amendment guarantees freedom of religion, not protection from religion. If High School students desire to exercise their rights by praying out loud at school, the let them. If you can honestly say that children have the same rights as adults and that we have the right to expression and free speech, then you need to support the students who wish to pray in school or at school events.
Freedom of religion guarantees the right to practice their religion as they see fit.
Over the years the state has protected people using the 1st amendment. The ACLU is willing to defend those who are oppressed, and I support that. However I do not support the fact that Christian rights do not seem to apply. If a student started singing a song by a rock group, the school would have stopped him and forced him to leave the ceremony. Therefore, the government should not implicitly support religion by only ignoring religious outbursts.