The Worst Witch is a 1986 television film based on the childrens book of the same name by Jill Murphy. It was produced by Central Independent Television and HBO.
The film follows the plot of the 1974 book. The movie centers around Mildred Hubble, who is invariably the schools Worst Witch. Mildred creates many mishaps, including the incidents of when Mildred turns herself invisible and transforms Ethel into a pig. The climax surrounds Miss Cackles notorious twin evil sister, Agatha, plotting to take over the Academy. Ultimately Agatha is foiled by Mildred and Mildred establishes herself as the hero for the academy.The film was shot at St. Michaels College in Tenbury Wells. Its opening and closing song Growing Up Isnt Easy was sung by Bonnie Langford. It was composed by Charles Strouse with lyrics by Don Black. They also wrote Anything Can Happen on Halloween. This song was covered by British rock band Stonegarth in 2008. Denis King composed its score and wrote the song My Little School. ........
Source: Wikipedia