In the movie, Anadil has a white streak in her hair, but in the book series, Anadil has white hair due to her albinism.
In October 2022, some costumes were on display in a Netflix pop-up store at The Grove in Los Angeles, California.
Patti LuPone, Michelle Yeoh and Rob Delaney all starred in Last Christmas (2019) which was also directed by Paul Feig.
When Sophie attends the School for Evil, she wears the branch crown Agatha gave her as a child. This is to remind her of her roots and her love of fairy tales. After her first meeting with Rafal, Sophie replaces the branch crown with a thorn one. This is to both make her look more intimidating and reflect her god complex. (Since Jesus Christ also wore an infamous crown of thorns.)
Soman Chainani: the author of the "The School for Good and Evil" novel, appears as one of the teachers from The School for Evil.