This is a list of episodes of the children's television series The Magic School Bus, which is based on the series of books of the same name written by Joanna Cole and Bruce Degen. The show's continuity is not necessarily dependent on the order in which the episodes aired. In the first episode aired ("Gets Lost In Space"), Arnold mentions that the class has already been inside a rotten log ("Meets the Rot Squad") and to the bottom of the ocean (various episodes, including "Gets Eaten", "Blows Its Top", and "Ups and Downs").