": Chang is a teacher again at Greendale.
"Introduction to Teaching": Chang helps Buzz Hickey show Jeff the ropes of being Greendale teacher.
"Basic Intergluteal Numismatics": Chang puts on a backwards costume in order to help catch the "Ass Crack Bandit"
"Cooperative Polygraphy": Chang admits to a particular solo act he performed not only in the study room but EVERYWHERE.
"Geothermal Escapism": Chang participates in Abed's campus wide game of "Hot Lava" leading a gang called the "Locker Boys".
"Analysis of Cork-Based Networking": Chang joins the Save Greendale Committee and comes up with bear themed dance that is revealed to be inspired by a new story of a bear mauling people at a birthday party.
"Bondage and Beta Male Sexuality": Chang starts a one-man show and realizes that he's preforming for ghosts, and later goes crazy believing that he is a ghost.
"App Development and Condiments": Chang fakes an injury to earn some sympathy points to become a "5" in the game MeowMeowBeenz
"VCR Maintenance and Educational Publishing": Chang walks in on Shirley, Jeff and Hickey finding unopened chemistry textbooks, and they tie him up and force him to lie.
"Advanced Advanced Dungeons & Dragons": Chang and his friends try to help Hickey reconnect with his son in a game of Dungeons & Dragons.
"G.I. Jeff": Chang plays "Overkill" in Jeff's hallucination.
"Basic Story": Chang teams up with Subway and betrays the group once he finds out that Greendale is being sold to Subway.
": Chang tries to get Shirley and Hickey admit that they are trying to save Greendale, and later realizes that he has serious mental issues.