I think people overestimate the value of propaganda in school. I recited the Pledge of Allegiance every day, and it did not turn me into a screaming, mindless, my-country-can-do-no-wrong kinda citizen.

And agreement with many posters that parenting is far more impactful and important than what you sing in school.

All that said, sure sounds like the teacher is not the sharpest pencil in the box.