How does Miss Caroline, Scout’s teacher, reveal her ignorance of the lifestyles of Maycomb County?

To begin the day, Miss Caroline reads a saccharine children's story about cats, which leaves the children feeling restless. Scout explains, "Miss Caroline seemed unaware that the ragged, denim-shirted and flour-sack-skirted first graders were immune to imaginative literature." They live on farms and see the realities of animals everyday. Half of these children had failed first grade the year before.