This is totally unacceptable in my books. The material he's teaching is way too gruesome and graphic for 6, 7 year olds. I would not even show that to my 10 year old.

Also, for a gifted class only learning Roman history for the whole year? Writing stories from memory? This is a really odd curriculum. Most gifted programs in schools start with advanced reading, creative writing and/or advanced math. I agree that you should take this to the principal.