Night

I can see how this would be a hard text for students to read. The writing is not very complicated. And the author did not use a lot of foul language. But there is a lot of graphic, visually and emotionally exhausting scenes. Students could have trouble really understanding what is going on because they have never experienced something as horrible as the Holocaust in their own lives. It's hard to look at the Holocaust because there is so much hate and violence.
I would use Night in a Social Studies or humanities classroom as a text to supplement out historical study of World War II and the Holocaust. We would have at home reading assignments every night and  could place the events in the book and characters (Hitler, Himmler, Mengele) with those that we are studying in class. We would also use their textbooks to teach the students about the history. Finally, students would look at themes like hate crimes and government directives as they created the Holocaust.