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.
In one scene, Stacey's hair alternates from straight to curly, depending on the shot.
When Kristy is making the peanut butter sandwiches, one of the sandwiches goes from unwrapped to wrapped to unwrapped in between shots.
During the opening sequence, a voice message from a BSC client says it's August, while the calendar shows the month of June.
In the film, it is revealed that Kristy will be turning 13 years old. Since this is based on the novels, Mallory Pike and Jessi Ramsey would not be club members yet since they do not join The Baby-Sitters Club until after Kristy turns 13.
In one scene, Mary Anne and Kristy are walking back from camp. In the novels, the camp would have been at Mary Anne's house, because she lived with her father, Richard Spier, and Dawn's mother, Sharon Schafer.
In the film, Luca calls Rosie "Rosaline" after she embarrasses him in front of Stacey, insinuating that is her given first name. In the novels, her real name is stated as being Mary Rose.