Of course, within the United States it is a mandatory outcome of the separation of church and state outlined by the First Amendment. Endorsing any specific religion within an institution that is funded by governmental bodies is prohibited. If your that desperate to inject religion into your child's education, either send them to private school, a parochial one, or homeschool them.
freedomfromfallacy » I'm weighing my tears to see if the happy ones weigh the same as the sad ones.