Frodo: Perhaps rather than being 'Prayer time', it should be 'Quiet time'?
It's moment of silence, not prayer time. You have the choice to pray at that time, or just think, sit there in silence. NOthing wrong w/that, it's not making anyone pray. In public school as long as it's student lead, they can pray out loud, but a teacher can not lead it, they also have "See You at the Pole", all the kids meet at the flag pole, normally before school and a student speaks, and then a student leads them in prayer.