The Adventures of Pollyanna(1982)

Synopsis

Pollyanna’s Aunt Polly wants the girl to spend her time studying, but Pollyanna has other ideas. She joins a secret club with a group of orphans, and they spy on a mysterious new resident in town, only to learn that her standoffishness is because of her desire to shield a retarded son. Pollyanna helps the town accept the boy and his mother.