We should teach the myths from various human religious around the world to our children. It would fit in history class, as an anthropology class about primitive cultures.
The first humans were afraid and told themselves stories about where they were coming from, and where they were going, and why they were here on earth, and about how they should behave. It is natural, and similar to how children in kindergarten invent beautiful stories and rules about the world, and refine them out of experience or reactions from other children and adults.
Even though some stories and religions give a better moral compass than others, teachers do not need to express any judgement against or in favor of any religion: the students can discuss between themselves if they would rather live in a world where "an eye for an eye, a teeth for a teeth" is a valid way to interact or rather in a world where universal peace is the final objective.
By comparing past religions and beliefs, the children will learn about humanity, and be better prepared to modern beliefs, from religious ones as Judaism, Christianity and Islam, to political ones, such as Capitalism, Communism and Anarchism. They will grow up to be better humans, who will be more adept at discerning the truth from the storied invented out of fear or self-justification.
