Hyperboles are used throughout To Kill a Mockingbird. A hyperbole is a statement that is exaggerated for emphasis and not intended to be taken seriously.
In Chapter 1, Scout describes the town of Maycomb. She uses hyperbole to emphasize how little there is to do and see in the town and in the area nearby:
A day was twenty-four hours long but seemed longer. There was no hurry, for there was nowhere to go, nothing to buy and no money to buy it with, nothing to see outside the boundaries of Maycomb County.
Scout is exaggerating when she says there is "nowhere to go" in Maycomb. People go to the O.K. Café, the drugstore, and to the square in town. Residents go to work, school, and church. It is true that there are few shopping options in Maycomb and that cash is hard to come by because of the Great Depression. There are no large towns for miles outside of Maycomb County, but that does not mean there is "nothing to see."
On Scout's first day of school, she meets her teacher, Miss Caroline. Miss Caroline is a new teacher, and she is not prepared for her rowdy class. The class is so loud that they can be heard in the classroom next door. Miss Blount, the teacher from next door, comes to Miss Caroline's class to tell them to be quiet:
"If I hear another sound from this room I'll burn up everybody in it. Miss Caroline, the sixth grade cannot concentrate on the pyramids for all this racket!" (Chapter 2)
Miss Blount is exaggerating when she says she will burn everyone in the class. She is threatening them in an exaggerated way to make the children keep quiet.