Final answer:
The question about Agatha and the School for Evil cannot be accurately answered with the provided texts, as there is no clear connection to a specific School Master or storyline involving these characters.
Step-by-step explanation:
The School Master you are referring to is likely a character from a story or novel that you are reading in class. However, from the information provided, it is unclear which School Master or narrative this question is referring to, as there are no details about Agatha, her mother, or a School for Evil that can be directly connected to the provided texts. The texts seem to be extracts from various literary works, including a depiction of the belongings left behind by a schoolmaster in a story that might relate to Washington Irving's "The Legend of Sleepy Hollow"; a scene from Henrik Ibsen's play "A Doll's House"; and another narrative concerning a boy and his family's dynamic. Without specific information about the book or story involving Agatha and the School for Evil, it is not possible to accurately answer who the School Master kidnapped instead of Agatha's mom.