Some schools offer an "opt out" opportunity, where those who refuse the propaganda must wait it out, either in the hall or vacant class room..that is indeed curious.
Liberals fight against allowing Bible study or prayer in schools, in which cases they claim the chance for unbelievers to "opt out" is not enough. They claim that just allowing Bible or prayer anywhere near the school is an "infringment upon their "rights" .
Even if a parent chooses to "opt out", that doesn't stop or even slow the zeal of the Obamaniacs. A student kept home, and cancelling that day's "state aid", may get their attention..especially if it is a couple hundred students..