How is Scout made interesting as a character and a narrator in "To Kill a Mockingbird"?

Scout is made interesting bot has a character and narrator because, as the previous editor noted, as a narrator Scout is grown up but reflecting back to a time when she was young.  This offers the reader an interesting view into her character that allows her to become endeared to the readers.

Scout is also interesting because she is so easy to relate to.  She goes through rites of passage - a terrible first day of school, standing up for herself (and her father) by beating her cousin up, learning what it means to be a woman rather than a tomboy, learning to see what really goes on around her and so on.  Since we all go through similar rites of passage, these allow us to connect with Scout.

Another reason Scout is so interesting is her innocence.  Obviously, Scout is not your normal child.  She can read fluently prior to school and has an advanced vocabulary.  However, while she may be advanced, she still suffers from the trappings of a child - she asks her uncle to "pass the damn ham" at Christmas dinner, she wears her jeans under her skirt at her Aunt Alexandra's lady's lunch, she consents to marry Dill and then wonders how they might go about getting themselves some children.

Part of the charm of the novel is watching Scout, the character, mature from a tomboy to the young lady who is narrating the story.