What are differences in the movie and the book To Kill a Mockingbird?

Although the film version of To Kill a
Mockingbird (1962) is a superlative adaptation of Harper Lee's novel, like
most movies, it suffers primarily from a time perspective. It is virtually impossible
for a two hour movie to include every aspect of its parent novel, and
TKAM is no exception. Many of the scenes and characters are absent
from the movie. For instance, the characters of Dolphus Raymond and Aunt Alexandra are
missing. None of Scout's school scenes are included in the film, nor is the scene with
Dolphus Raymond. One of my favorite scenes, the children's building of the "morphodite
snowman" followed by the fire that burned Miss Maudie's house, is also left out of the
film.

Nevertheless, the film is still one of the best
adapted screenplays ever, and Gregory Peck's performance as Atticus won him the Oscar
for Best Actor; his portrayal as Atticus earned him the honor of "greatest movie hero"
of the 20th century by the American Film Institute. The movie won two other Oscars,
including one for screenwriter Horton Foote. The film was nominated for Best Picture,
but it lost to Lawrence of Arabia.