Erik Charles Nielsen

As Annie recruits Abed and Troy for a psychology class experiment, Jeff and Shirley bond over their mutual fondness for gossip.

As Pierce volunteers to compose a new school song, a cheating episode in Spanish class leaves Jeff defending Britta before a disciplinary tribunal.

Señor Chang (Ken Jeong) has become the teacher from hell, and the group nominates Jeff (Joel McHale) to intervene. Meanwhile Troy (Donald Glover) and Abed (Danny Pudi) have trouble with a lab rat experiment, and Pierce (Chevy Chase) helps Shirley (Yvette Nicole Brown) with public speaking.

When the yam the study group was growing for biology class is killed, Troy (Donald Glover) and Abed (Danny Pudi) are on the case. Once they pin the crime on Todd (guest star David Neher), Annie (Alison Brie) and Jeff (Joel McHale) team up to argue their case to the class. Guest starring Michael Kenneth Williams and Leslie Hendrix.

A scheme to replace a corrupt cafeteria employee transforms the study group into a criminal gang run by a power hungry Abed.

Dean Pelton (Jim Rash) enlists the study group to make the campus more attractive in order to woo a wealthy student to Greendale. Meanwhile, a class on how to teach P.E. pits Shirley (Yvette Nicole Brown) against Troy (Donald Glover).