The movie includes commingled parts of Baby-sitters Club books #45 Kristy and the Baby Parade, #86 Mary Anne and Camp BSC, and Kristy's Book, none of which were actually written by Ann M. Martin.
This movie was directed by Melanie Mayron and Kristy's dad was portrayed by Peter Horton. The two played a couple in the late 1980s TV show thirtysomething (1987).
In the film, Luca calls Rosie "Rosiline"after she embarrasses him in front of Stacey, insinuating that is her given first name. In the book series, her real name is stated as being Mary Rose.
In one scene, Stacey's hair alternates from straight to curly, depending on the shot. (It should be dually noted that the character of Stacey McGill is known for perming her hair, among other things.)
During Claudia's test in the first shot she holds the pencil vertically with the eraser end touching the table. In the second shot her hand is flat on the table and the pencil rests horizontally in her hand with the eraser aimed at her. The third and fourth shots has her holding it vertically again with the eraser end down.