The original title of the film was "Heart and Soul". It was then changed to "Getting Lucky". Finally, just prior to release, "Mischief" was chosen.
The movie's star Doug McKeon turned eighteen while filming. He joked later that if he hadn't turned 18, seeing Kelly Preston strip naked would have tuned him into a man pretty fast.
This was Kelly Preston's first nude scene. She said she didn't mind being naked because the scene was intended to be comedic.