Middleton High School is a fictional high school featured in Kim Possible. Located in the city of Middleton as part of the "Middleton United" school system. It is the high school Kim Possible and Ron Stoppable go and graduate from together.
The only teachers ever seen are Steve Barkin and two others. Bonnie Rockwaller, Monique, Zita Flores, Felix Renton, Josh Mankey, Brick Flagg, Jim & Tim Possible, Ron Reiger, and Tara have all attended Middleton High School during the course of the series.
The school mascot is the Mad Dog, which Ron brought to life as a mascot, much to Bonnie's displeasure. Jim and Tim Possible took over the role of school mascot as the Pep Puppies when Ron joined the School Football Team as the Record-Breaking All-Star Running Back.
Middleton High School has stairs, as well as ramps and elevators for handicapped students like Felix Renton.
The display sign on the outside of the school is unique as it sports a different advertisement every time the exterior of the school is shown, often relating to the theme of the episode.
- McMath Secondary School in Richmond, British Columbia was used as Middleton High in the live-action movie.