King Saul and the Witch of Endor

Amazingly, King Saul and the witch of Endor (I Samuel 28) is often overlooked when teaching children. The story refers to Saul having banned all of the mediums in the land. Why did he ban them? Deuteronomy 18:10-11 "...And do not let your people practice fortune-telling, or use sorcery, or interpret omens, or engage in witchcraft, or cast spells, or function as mediums or psychics, or call forth the spirits of the dead." I thought this was a great opportunity to teach about the danger of Ouija boards, fortune telling, seances, and other things the children might be exposed to.