
A new adaptation, co-production of CBBC, ZDF, and Netflix premiered in 2017. A TV series based on the book aired from 1998 to 2001, and has inspired two spin-offs, Weirdsister College, aired in 2001, and The New Worst Witch, aired in 2005. In 1986, the first book in the series was made into a television film of the same name.

The books have become some of the most successful titles on the Young Puffin paperback list and have sold more than 5 million copies. The first, The Worst Witch, was published in 1974 by Allison & Busby, and the most recent, First Prize for the Worst Witch, was published in 2018 by Puffin Books, the current publisher of the series. The series are primarily about a girl who attends a witch school and fantasy stories, with eight books published. The Worst Witch is a series of children's books written and illustrated by Jill Murphy.

The covers from the first seven books, shown in publication order
