Religion in schools?

Do you believe that religions should be taught in school? Both other religion (whether you are Muslim, Jewish, Christian, Buddhist etc) or your own religion.
I myself would prefer if Religion were an optimal subject from years 5/6 or 7/8, depending on when a school begins to accept kids.
It is the definition of a subjective topic (Googled: Based on or influenced by personal feelings, tastes, or opinions)