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27 Episodes 1977 - 1978
Episode 1
Sat, Sep 10, 197730 mins
The Welcome Back, Kotter flashback episode. The Sweathogs throw Kotter a surprise party before the start of the new semester. During the party, Kotter and the Sweathogs reflect back on all the good times they had over the first two seasons.
Episode 2
Thu, Sep 15, 197730 mins
As the Kotters prepare for the birth of their baby, the Sweathogs discover that Barbarino got left back in the 10th grade.
Episode 3
Thu, Sep 15, 197730 mins
Julie goes into labor and Gabe waits to hear what she has. After waiting impatiently, Gabe is surprised to learn he's the father of not one, but two baby girls.
Episode 4
Thu, Sep 22, 197730 mins
Woodman subs for Kotter while he and Julie bring the babies home from the hospital. Then Julie's parents drop in from Nebraska for a visit, and Gabe has to sleep on the fire escape.
Episode 5
Thu, Sep 29, 197730 mins
Kotter buys Barbarino's share of the Sweathogs' lottery ticket, but Barbarino says he wants no part of it because they never win. When they do win the $1,000 semifinal prize, Barbarino and Kotter disagree on who should get the money.
Episode 6
Thu, Oct 6, 197730 mins
Kotter refuses to help Barbarino study for his test that would promote him to the eleventh grade. So the Sweathogs make a deal with Kotter. If he helps Barbarino study, they will help Julie and the babies.
Episode 7
Thu, Oct 13, 197730 mins
Horshack joins a religious cult and decides to drop out of school to go live with with the cult members. But before he leaves, the Sweathogs pull him into the school bathroom and try to deprogram him.
Episode 8
Thu, Oct 20, 197730 mins
The Kotters are looking for a new apartment and having no luck. Juan has an answer to their problem. His Uncle owns a building in a good neighborhood at the right price. The gang helps the Kotters move in and everything seems to be going great...until Moe Epstein tells them that there are no babies allowed.
Episode 9
Thu, Oct 27, 197730 mins
Woodman writes a novel set during the Civil War era that very closely parallels the Sweathogs, and the Sweathogs are not happy about it. So they write a novel of their own set in outer space and depicting Woodman as the villain.
Episode 10
Thu, Nov 3, 197730 mins
The Sweathogs' singing group wins the city-wide talent contest semi-finals. Then Barbarino becomes infatuated with one of their finals competitors. When they start dating, it jeopardizes the Sweathogs' chances of winning.
Episode 11
Thu, Nov 10, 197730 mins
Barbarino makes up with the Sweathogs and gets the band back together. But when the judges found out Barbarino quit the band, they disqualified them from the contest.
Episode 12
Thu, Nov 17, 197730 mins
When Woodman's contract for renewal is up, Kotter decides he wants to apply for vice principal. Then he has a dream that he is the king of Buchanan High School and the very old Sweathogs want to oust him from power.
Episode 13
Thu, Nov 24, 197730 mins
Washington scores a 90 on his literature exam and Woodman accuses him of cheating. So to prove his innocence, Washington agrees to to take a make-up test.
Episode 14
Thu, Dec 8, 197730 mins
Epstein paints a mural of a nude woman on the wall of the school, using the image of Julie Kotter as his inspiration.
Episode 15
Thu, Dec 15, 197730 mins
Merriment, mistletoe and menorahs are the beginnings of a Merry Christmas celebration with the Sweathogs and Gabe and Julie Kotter.
Episode 16
Thu, Dec 22, 197730 mins
The Sweathogs host a radio station at school, but Horshack's ratings are so bad that he gets canceled. In his final broadcast, he becomes a radical radio broadcaster causing his ratings to soar.
Episode 17
Thu, Jan 5, 197830 mins
Woodman brings a computer into the Sweathogs' class to teach their lessons and the class grades increase dramatically. But now, Kotter is jealous because the computer is making him feel obsolete.
Episode 18
Thu, Jan 12, 197830 mins
The new girl in Kotter's class declares that she is going to become a Sweathog, but the other Sweathogs strongly oppose her joining their group. So she pulls a stunt to prove her worth which backfires getting the Sweathogs nearly expelled.
Episode 19
Thu, Jan 19, 197830 mins
The sweathogs purchase term papers from a couple of local hoods. Kotter recognizes Epstein's paper as one he himself had handed in years ago.
Episode 20
Thu, Jan 26, 197830 mins
The Sweathogs convince Gabe to audition at a local hot spot, never expecting him to succeed, but after Mr. Charnoff a slick agent gets through with him, it's goodbye teacher, hello show biz. First of a two-part episode.
Episode 21
Thu, Feb 2, 197830 mins
Kotter is a success at being a comedian but it is putting a strain on his marriage and his relationship with the Sweathogs. Second of a two-part episode.
Episode 22
Thu, Feb 9, 197830 mins
Freddie is prescribed painkillers to treat a nagging injury he suffered playing basketball ... and soon becomes hooked. His friends become concerned about Freddie's increasingly scary behavior, but "Boom-Boom" tries to brush them off - after all, it's just "vitamins." What becomes even more scary is that Horshack blindly believes his friend's explanation, even though it becomes clear that Freddie needs help before something goes horribly wrong.
Episode 23
Thu, Feb 16, 197830 mins
While Mr. Kripps, the woodshop teacher, chastises Barbarino for his shop project, he suddenly dies of a heart attack. Barbarino blames himself for Mr. Kripps death and turns himself into the police.
Episode 24
Thu, Feb 23, 197830 mins
Arnold is depressed because no girl will go out with him. After Mrs. Kotter consoles him and helps him find his confidence, he falls in love with her.
Episode 25
Thu, Apr 13, 197830 mins
A girl in Kotter's class faints after class is over. When Kotter gives her mouth-to-mouth, Woodman catches him and is convinced Kotter was kissing her.

Episode 26
Thu, May 11, 197830 mins
The Sweathogs sneak out to a strip club and recognize one of the dancers as their former classmate Hotsy Totsy. Shortly after, the Sweathogs, Kotters, and Woodman step in and try to find her a more respectable job.
Episode 27
Thu, May 18, 197830 mins
Carvelli goes to Buchannan High as part of an exchange program and tells the students about his encounter with aliens. Woodman, convinced his story is true, plans to go on the spaceship when it lands in the schoolyard.