Political correctness has a double standard when it comes to teaching about religion in public schools. Drop Christianity down the memory hole but give extensive and mostly favorable coverage to Islam.
Even the mainstream media have provided extensive coverage of the steady stream of court cases and threatening letters from the American Civil Liberties Union aimed at removing all signs of Judeo-Christianity from public schools. Not only must prayer be prohibited, a cross and the Ten Commandments removed or covered up, a valedictorian banned from thanking God for his help, a football coach prohibited from bowing his head during a student-led pre-game prayer, singing of Christmas carols banned, and school calendars required to recognize winter holiday instead of Christmas, but there is also the complete omission of the history of the Founding Fathers’ public recognition of Christianity.
An organization called ACT for America conducted an analysis of 38 textbooks used in the sixth- through 12th-grades in public schools, and found that since the 1990s, discussions of Islam are taking up more and more pages, while the space devoted to Judaism and Christianity has simultaneously decreased. In 2011, the National Assessment of Educational Progress reported that American 12th graders scored lower in history than in any other subject, even lower than in science, math and economics.