They didn't need to know them like that, just a general overview of them. In fact, they didn't even read them as they were only a general discussion chapter in her history book.
I ran into the same thing here in Florida. I was floored!
I spoke to some teachers about this and I was told they were to busy to really teach with all the behavioral problems and standardized tests they have to teach.
They teach “concepts”. Whatever the hell that is.