One quickly realizes when reading To Kill a Mockingbird that Scout is who she is because of the way Atticus has raised her. He has nurtured her mind, conscience, and individuality without bogging her down in fussy social hypocrisies and notions of propriety. While most girls in Scout's position would be wearing dresses and learning manners, Scout, thanks to Atticus's hands-off parenting style, wears overalls and learns to climb trees with Jem and Dill. She does not always grasp social niceties (she tells her teacher that one of her fellow students is too poor to pay her back for lunch), and human behavior often baffles her (as when one of her teachers criticizes Hitler's prejudice against Jews while indulging in her own prejudice against blacks), but Atticus's protection of Scout from hypocrisy and social pressure has rendered her open, forthright, and well meaning.
At the beginning of the novel, Scout is an innocent, good-hearted five-year-old child who has no experience with the evils of the world. As the novel progresses, Scout has her first contact with evil in the form of racial prejudice, and the basic development of her character is governed by the question of whether she will emerge from that contact with her conscience and optimism intact or whether she will be bruised, hurt, or destroyed like Boo Radley and Tom Robinson. Thanks to Atticus's wisdom, Scout learns that though humanity has a great capacity for evil, it also has a great capacity for good, and that the evil can often be mitigated if one approaches others with an outlook of sympathy and understanding. Scout's development into a person capable of assuming that outlook marks the culmination of the novel and indicates that, whatever evil she encounters, she will retain her conscience without becoming cynical or jaded. Though she is still a child at the end of the book, Scout's perspective on life develops from that of an innocent child into that of a near grown-up.