Wayside School is Falling Down is an 1989 children's novel by American author Louis Sachar, and the second book in his Wayside School series. Like its predecessor, it contains 30 chapters, although some chapters are interconnected in a more narrative form rather than as separate stories, as is the case for its predecessor. The title comes from the title of the favorite song of one character, Kathy, in the tune of London Bridge Is Falling Down, during the course of the book. The novel revolves around three main storylines: first is the introduction of a new student, Benjamin Nushmutt, while another involves Miss Zarves, the teacher of the nonexistent 19th-floor class. The thirtieth and final story-line, told in the final chapter of the book, ends in a cliffhanger.