Do schools just ignore teaching WWII?
I think students are the ones doing the ignoring as is the rest of the culture at large.
For a good number of, oh... DECADES now there has been a free floating "cult of authenticity". We all have to ascribe to the most "authentic" version of whatever group or subgroup we are a nominally a part of.
For the longest time, and this picked up pace by the late 90's, the supposed best and most authentic version of the "average" American is a person that is frankly, a moron. Really. Look at popular culture. Apparently knowledge of history, familiarity with science, paying attention to world event? All something presented in popular culture as being out of the wheel house of the "average" American. This "average" American isn't just someone lacking in a degree or specialized acumen. No, they are morons. And if they aren't well, then they are caricatured as "nerds/poindexters" and the like. Look at the horror show that is THE BIG BANG THEORY.
Popular culture isn't just sending a message that being informed (forget accredited education or degrees... Just being informed) is out of the norm and will cut into your "coolness", it's also somehow a betrayal of your authentic self.
Yes... One can say that the masses have never been as informed as they should or could be. Fine. But the trend to glamorize being stupid frankly, or remove the stigma of being uninformed about the world has been building and building and I think it is not just us noticing it more due to media but it is actually increasing.
And for a Democratic Republic... That's dangerous.
I say all of this as someone without the benefit of a college education.