Originally rated R, 2 minutes was cut from the film by the Nova Scotia Film Board (Canada) to gain an A rating.
The U.S. version cuts out ten minutes of footage to obtain an R rating.
The U.S. release has some dialogue and scenes of violence removed, along with a scene where Sister Cindy caresses Kitty's legs after her training, making them seem more like lovers than just teacher and student.
The Hong-Kong Director's Cut version runs approximately three minutes longer than the international uncut version.