That's very sad and disgusting. Seems like your teacher thrived on those perverted comments. Don't let it pass! Have your parents call your principal and spread the word, a person like this should not be allowed to teach impressionable young minds. That's disgusting and terrible for you to have to endure!

However, I think it's alright to read about Hiroshima, especially in such a high grade as the 9th. But history class would probably be more appropriate for that though.

Best of luck to you