Good teachers do it, both in history and french class, but that’s often an overlooked part of the teaching plan. In part because our government ask teachers to teach more and more things a year, and no days are added to said year. (The teaching about religion, I mean. Teaching religion is still illegal in public schools, and must be optional in privates ones.)

Also, the “peoples” who govern us might prefer us ignorant of those things. (And many other, to be honest.)