When I worked at a library in Windsor (Ontario), we once had an exhibit on the Holocaust put up by members of the local Jewish community to commemorate the liberation of the camps. Naturally, members of the Muslim community (which by then far outnumbered the Jewish community) objected, and insisted that they be able to put up an exhibit on the "occupation" of Palestine once the Holocaust one went down. We let them, and of course, it was full of foul, anti-Semitic lies, and we were the subject of angry letters to the editor in the local newspaper
That's why, I'm sorry to say, prayer and religion should not be in the classroom of public schools. You'll have Xtians and Jews making honest well-meaning presentations, then in the name of equal opportunity, along will come the moslems, with pockets full of Arab oil money, recruiting and bribing impressionable, wholesome American kids to join the RoP tm and further their conspiracy.