To Kill a Mockingbird by Harper Lee

Atticus Finch is a lone father with two children, one of which is Scout who often spends her summer holiday with a friend, called Dill, in her southern hometown of Maycomb. One strand of the novel's action deals with their main activity which is to find out more about one of the Finch's neighbours, the mysterious Boo Radley.
A second strand of action and reflection is about Atticus Finch, a lawyer, who not only treats his children as individual beings, but also a Negro who is accused of a crime committed to a white woman. Atticus' brave attitude to defend the black man provokes resentment among the predominantly white population of Maycomb. He is called nigger-lover, but is superior enough not to be distracted from his sound convictions and ideals. For Scout and her brother, Atticus is not only a good father but also an example to them. All the episodes in the novel lead to some kind of learning experience for Scout.
In the end when Scout and her brother are saved from a white man's attack by the mysterious Boo Radley, she realizes that she must not judge people until you get to know them.
Helpful for your class preparation are:

Bloom's Notes on To Kill a Mockingbird by Herald Bloom