"Pilot": Pelton fumbles a speech while trying to welcome a new group of students to the school.
"Spanish 101": Pelton makes various announcements including that whoever is growing a patch of cannabis can report to security for a prize.
"Introduction to Film": Does not appear.
"Social Psychology: Does not appear.
"Advanced Criminal Law": When Britta cheats on a Spanish test, Pelton forms an academic tribunal to deal with the matter.
"Football, Feminism and You": Pelton threatens to use photos of Jeff in Greendale promotional materials unless he gets Troy to join the football team. He also teams up with Pierce to create a new mascot for the school.
"Introduction to Statistics": Pelton is at the staff Halloween party and asks why Erkle (Shirley's costume) is tearing the antennae off Professor Slater's car.
"Home Economics": Does not appear.
"Debate 109": Pelton and Professor Whitman ask Jeff to join the school debate team along with Annie for the intercollegiate debate championship.
"Environmental Science": Pelton announces "Green week" and that for the week the school is changing its name to "Envirodale". He also announces a concert with "Greene Daeye".
"The Politics of Human Sexuality": Dean Pelton, along with his new assistant Sabrina Shmuckle and with the help of Annie, holds a STD Fair in the cafeteria promoting safe sex to the Greendale students.
"Comparative Religion": Dean Pelton dresses up as a non-denominational Holiday character "Mr. Winter".
"Investigative Journalism": Annie investigates Pelton's possibly racist mass text message he sent out to the students.
"Interpretive Dance": Dean Pelton learns about Jeff and Michelle Slater's relationship and talks to them about it in his office.
"Communication Studies": Pelton makes announcements about Valentine's week and the Greendale Human Being's behaviour.
"Romantic Expressionism": Does not appear.
"Physical Education": Pelton takes a photo of a nude Jeff playing pool.
"Basic Genealogy": Pelton is introduced to Chang's brother, Rabbi Chang.
"Beginner Pottery": Does not appear.
"The Science of Illusion": Pelton's announcement about April Fools Day is interrupted by Leonard. Later, he grants Annie and Shirley temporary security positions, deals with the police and Spanish class over a cadaver thrown out a window and then fires Annie and Shirley from their positions.
"Contemporary American Poultry": Pelton is bribed by the "Chicken Finger Association" led by Abed to look the other way.
"The Art of Discourse": Does not appear.
"Modern Warfare': Dean Pelton sends in the paintball ringer Ben Chang into the annual Paintball Assassin game in order to prevent the students from winning the prize.
"English as a Second Language": Pelton's announcement is that he is going to replace the announcements with soothing sounds during exam week. Later, he introduces Dr. Escodera as Chang's replacement for Spanish 101 class.
"Pascal's Triangle Revisited": Dean Pelton's dalmatian fetish makes its presence known at the end of the year Transfer formal dance.