- Main article: List of Episodes
Season Four began on April 5, 2000. It contained seventeen episodes where the first half aired during spring and early summer and the second half airing in the fall. It ended on December 20, 2000.
In this season, the boys move into fourth grade, Mr. Garrison comes out of the closet and Timmy is introduced. This season is also notably the first season to change the theme song and title sequence.