Mrs. Mackelroy

Mrs. Mackelroy appears in Book 5 as Greg's new math teacher. She used to teach kindergarten.

Her math class came right after Physical Education, and she didn't like the sweaty smell of her students in the classroom, so she complained to the school principal about the situation. The principal then made the students take showers after Phys. Ed. Mrs. Mackelroy knew her students were faking it, but she didn't complain anymore.