Need to know some main pointer about the book to kill a mocking bird ?

[Young Black And Wise]

I read the book over the summer like we where suppose to. I took all the test and got a C.We had to write and essay let my friend see it . He wrote it word for word like an idiot. The teacher called us out and when you cheat it counts as 2 zeros so now i have an F. So i cant afford to get a C on this exam . So what type of things do you all think will be on the final exam i mean i know the main idea of the book. I even re read the book but i really need an A.