This is obvious weasel wording. It is good for students to question all things they're learning. I hope they do question it, as I hope they question the section

This is obvious weasel wording. It is good for students to question all things they're learning. I hope they do question it, as I hope they question the sections on manifest destiny and American exceptionalism as well. It doesn't mean that 1/3 of 8th graders are holocaust deniers. EDIT: I read their PDF, this methodology is ridiculous. Their website has the bold claim that "42% of teens have witnessed an antisemitic event", but reading the actual document, that includes hearing about the Pittsburgh synagogue shooting on the news, which basically means that 42% of teens read the news. This isn't the kind of source you should be citing if you want to be taken seriously.