The ranking list: 1 Annie, 2 Abed, 3 Troy, 4 Todd, 5 Jeff, 6 Britta, 7 Pierce, 8 Shirley.
Although aired as the third episode of season 3, this was originally intended to be the fourth episode. This is confirmed in episode five when Britta remarks about the tests she collected last week.
The mannequin leg that appears with Chang is a reference to creator Dan Harmon's former fetish with a mannequin leg that he discusses on his podcast, "Harmontown".
The writer Maggie Bandur says that several different groups of fans hold the theory that since this episode comes right after the episode with all the multiple universes, that the characters act so mean to Todd because this is one of the 'Evil' alternate universes.
In the DVD commentary, episode writer Maggie Bandur explains that the fire in the cafeteria was modeled after the Reichstag fire which Adolf Hitler used to consolidate power in Nazi Germany. In the aftermath of the Greendale fire, Chang is named head of security after Sgt. Nunez quits.