How would I describe Scout's role in To Kill a Mockingbird? Is Scout the protagonist?

Since she is the narrator and main character of
To Kill a Mockingbird, I would certainly consider Scout as the
prime protagonist and general focus of the novel. Jem is almost an equal to Scout as far
as importance of characters, and he is present in most of the same scenes as Scout
appears. Atticus' strong character nearly comes to dominate the story, especially in the
second half of the novel that includes the trial of Tom Robinson. The argument could be
made that Atticus, as the primary adult character, is actually the protagonist; however,
Scout is present in nearly every scene of the novel, and her role as narrator makes her
the more obvious choice.