"the option of" Read your first amendment again, it's not freedom from religion. "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances." If we said "everyone must have Bible class" that'd be a problem.  When (and thanks to the Anti-Christian Leftist Union we do) we say "everyone must have atheist indoctrination" that is a problem.    Offering an option is no different than being a school that offers Spanish and not French, or both and not Portugese.  Allowing choice is freedom; only the left defines freedom as forced statist ideology.