I'm feeling uncomfortable about yesterday's post. I'd like to point out that Youngest is more interested than most kids her age in current affairs and in stuff like the Holocaust. I don't remember having a conversation like that with Eldest when she was in second grade.
This doesn't mean other kids are ignorant of the Holocaust. Round Yom HaShoah all school kids learn about it, in a manner suitable to their ages.
Last year, when Eldest was in the fifth grade, her class was responsible for the Yom HaShoah ceremony at school. In preparation, they were shown movies, read books and had a Holocaust Survivor, the grandfather of one of the students, come to talk to them.
In high school a lot of the kids go to Poland to visit extermination camps. My nephew went a few months ago.