The novel is written in retrospect so we see Scout's mindset as an adult. Still we can see changes as she comes of age. Much of her maturity involves a loss of innocence.
She learns to be more loving and accepting of people. She sees Calpurnia not as a tyrant but as a strong black woman, a role model and a mother figure. Scout sees recognizes the prejudice practiced daily by her friends and neighbours and she sees first hand how life can be dark and unfair (Tom Robinson). Scout most importantly learns the sense of empathy her father has and that at times one needs to stand up for what is right in the face of overwhelming opposition. Jem also follows this same pattern even faster than Scout.