Please, it’s only necessary to think about it seriously for a single moment to realize that a school where children are taught “that the earth is 6000 years old” obviously doesn’t exist.

But the joke here is about Americans, right? (If not, what is the joke that you’re trying to make!?)

Come on, I like a good “look at how stupid those Americans are” as much as anyone, but for it to be funny it has to be within the realm of what could possibly be true.

Sure. You’re very funny.

The question was about things taught at school.

I found The Ambassador by Mads Brügger to be particularly gripping, he goes too far and realizes that he’s gone too far and many uncomfortable truths are revealed:

https://www.imdb.com/title/tt2048877/