Mr. Sweeney (Ned's Declassified School Survival Guide)

Mr. Sweeney (Don Creech) is Ned Bigby's 7th and 8th grade Science Teacher. He is shown to dislike Ned and Cookie, mostly because of their crazy schemes. He is often shown as the show's antagonist. Sometimes, he is just teaching Ned, Cookie, and Moze a lesson. He has a dislike for cell phones as shown in the episode "Cell Phones". He is always shown with a lab coat exept for the Episode "School Car Wash."

Sweeney is what Ned considers to be "an evil teacher who's out to destroy you". He is an evil scientist and teacher at James K. Polk Middle School.