If they really cared about teaching the history of this world-domination movement cleverly disguised as a religion, they would pass out copies of Robert Spencer’s books.
But that’s not what they are trying to do. They are teaching the kids that Christians and Jews are bigoted, prejudiced and intolerant and that they should deny their identity and bow down and make out they are good little death cultists and then go home and see how intolerant mommy and daddy are and maybe little Timmy and Janie will one day grow up to be big, adult death cultists and reject Christianity and Judaism.
Cancer is easier to treat when removed early. Let it go too long and it spreads throughout the body, eventually killing the host.