Would 'The Book of Negroes' be a Good Book on a Grade 8 Reading List?

Hi,
Today, I will be discussing whether 'The Book of Negroes' would be a good book for a grade 8 reading list. I think that it would be more suitable on a Grade 11 or 12 reading list, since there is a considerable amount of disturbing and 'inappropriate' content. This content is necessary for the book to have the right impact on the reader. However, some younger readers may feel offended by it, or would possibly not be able to take it seriously and maturely. I think that it would be more enjoyable for girls, as opposed to boys, mainly because the main character is a girl, and it does not contain the amount of violence that many boys of this age seem to enjoy; it is more about a woman's emotional journey throughout the horrible circumstances that she is in.

This is, of course, just my opinion.

Thanks for reading!!
STzivanovsky