The siblings of Calvin depicted in the movie, "Pearl" and "Frank" were actual real siblings of the real Calvin Graham. There were Six Graham Children altogether.
Ricky Schroder was actually 17 or 18 years old when he played the 12-year-old Calvin Graham.
While the movie depicted Calvin Graham as being second to the youngest in the family, he was in real life the youngest sibling. The idea that he had a younger baby sister being raised by his older sister Pearl was fictionalized for "dramatic" purposes.
Mary-Louise Parker's debut.