Mrs. Granger is a fictional character from the children's book series, particularly known in the story "Frindle" by Andrew Clements. She is a strict and dedicated English teacher who values the importance of language and proper grammar. Her passion for teaching often makes her a formidable presence in the classroom. In the story, Mrs. Granger becomes a key figure in a conflict over a new word, "frindle," which is created by her student, Nick Allen. As the word gains popularity, Mrs. Granger's strong beliefs about language and its usage lead to an engaging exploration of creativity and authority in education.