US courts have not banned teaching about religion in the schools – just teaching about religion from a religious (usually Christian) perspective.
Many other countries face this same challenges and do a much better job of http://this.Here are some the approaches they take:
https://theconversation.com/finding-objective-ways-to-talk-about-religion-in-the-classroom-is-tough-but-the-cost-of-not-doing-so-is-clear-219783
#religion #atheism #lawfedi