From my soap box, the religious self-policing, to me, is one of the more disconcerting aspects of the education system in the United States. As a personal observation, if a parent is worried that a single teacher providing an intentionally unbiased perspective on a philosophical topic is going to challenge a child's beliefs to the point where it overcomes a family's and church's indoctrination then it isn't the new perspective that's the problem. To this day I believe that "core curriculum" should include logic and philosophy with an emphasis greater than all other topics.