I don't think they should teach anything of the like, they would screw it up. These teachers and unions screw everything up, remember New Math, you wouldn't get the right answer, but you could talk about how the equation made you feel. I am lucky I went to Catholic school from Junior high on, I avoided the brainwashing that takes place in public schools.
Not to change the subject, but there is this lie that is told over and over again in this country that needs to stop. There exists no place in the Constitution/Bill of Rights/Amendments that says there can be no religion within the public square. This is a classic case of repeating a lie over and over again, Goebbels taught us you can convince the public of lies if you do so. Socialists use the line in the Constitution where it mentions that the government won't favor one religion over another as being cause for banning all religion from the public schools, buildings, money and the like. Doesn't exist, quit using it, this isn't Soviet Russia, we can have religion freedom in public display without worrying about some commissar busting down your door and serving you with a endictment.