Overall IF 14 year olds are not mature enough to handle Maus, teach Holocaust to seniors. It SHOULD shock people. People should not leave a class on the Holocaust feeling happy, proud, content, etc. And if anyone thinks "damn" is obscene but not concentration camps, I just do not understand.
Maus reminds me of really good science fiction. Good sci fi takes a tough topic and resets it into a universe where it can be discussed. Maus uses mice and cats (like Animal Farm also). Yes, showing people hanging from trees is more than most want for a class book. But showing drawn mice hanging from trees? For me, it is brilliant. It really shows the reality without showing the reality.