Several children are known to be in the fourth Grade, but do not appear in Mr. Garrison's class on a regular basis. Another 4th Grade class is shown entering the hallway in "Eat, Pray, Queef". It appears to be made up of the students who were in the main class in 3rd Grade but not the 4th Grade. Its classroom has not been seen. In "Bass to Mouth", Cartman mentions another 4th Grade teacher named Mr. Bart (in reference to one of his students, Pete Melman) who may or may not teach this class. Other 4th Grade students have also been seen at the school, but not in Mr. Garrison's classroom.