Season 1 | Season 2 | Season 3 | Season 4

Episode # Title Airdate
Season 1
1 The Great Debate 9/9/1975
2 Basket Case 9/16/1975
3 Welcome Back (Pilot) 9/23/1975
4 Whodunit? 9/30/1975
5 The Election 10/7/1975
6 No More Mister Nice Guy 10/14/1975
7 Classroom Marriage 10/21/1975
8 One of Our Sweathogs Is Missing 10/28/1975
9 Mr. Kotter, Teacher 11/4/1975
10 The Reunion 11/18/1975
11 Barbarino's Girl 11/25/1975
12 California Dreamin' 12/2/1975
13 Arrividerci, Arnold 12/16/1975
14 The Longest Weekend 1/6/1976
15 The Sit-In 1/13/1976
16 Follow The Leader (1) 1/20/1976
17 Follow The Leader (2) 1/22/1976
18 Dr. Epstein, I Presume 1/29/1976
19 One Flu Over The Cuckoo's Nest 2/5/1976
20 The Telethon 2/12/1976
21 Kotter Makes Good 2/19/1976
22 Father Vinnie 2/26/1976
Season 2
23 Career Day 9/23/1976
24 Inherit The Halibut 9/30/1976
25 Sweatside Story 10/7/1976
26 The Fight 10/21/1976
27 The Museum 10/28/1976
28 Gabe Under Pressure 11/4/1976
29 Sweathog, Nebraska Style 11/11/1976
30 Sadie Hawkins Day 11/18/1976
31 Hello, Ms. Chips 12/2/1976
32 Horshack vs. Carvelli 12/9/1976
33 Sweathog Clinic for the Cure of Smoking 12/16/1976
34 Hark, the Sweatkings 12/23/1976
35 A Love Story 12/30/1976
36 Caruso's Way 1/6/1977
37 Sweatgate Scandal 1/13/1977
38 Kotter and Son 1/20/1977
39 Chicken a la Kotter 1/27/1977
40 Has Anyone Seen Arnold? (1) 2/3/1977
41 There Goes Number 5 (2) 2/3/1977
42 The Littlest Sweathog 2/10/1977
43 Radio Free Freddie 2/17/1977
44 I'm Having Their Baby 2/24/1977
45 I Wonder Who's Kissing Gabe Now? 3/3/1977
Season 3
46 Sweathogs Back-to-School Special 9/10/1977
47 And Baby Makes Four (1) 9/15/1977
48 And Baby Makes Four (2) 9/15/1977
49 And Baby Makes Four (3) 9/22/1977
50 Brother, Can You Spare a Million? 9/29/1977
51 Just Testing 10/6/1977
52 The Deprogramming of Arnold Horshack 10/13/1977
53 What a Move 10/20/1977
54 A Novel Idea 10/27/1977
55 Barbarino in Love (1) 11/3/1977
56 Barbarino in Love (2) 11/10/1977
57 Kotter for Vice Principal 11/17/1977
58 Swine and Punishment 11/24/1977
59 Epstein's Madonna 12/8/1977
60 Sweathog Christmas Special 12/15/1977
61 Sweatwork 12/22/1977
62 Meet Your New Teacher: Batteries Not Included 1/5/1978
63 Angie 1/12/1978
64 Epstein's Term Paper 1/19/1978
65 There's No Business Like Show Business (1) 1/26/1978
66 There's No Business Like Show Business (2) 2/2/1978
67 What Goes Up 2/9/1978
68 Goodbye, Mr. Kripps 2/16/1978
69 Horshack and the Madame X 2/23/1978
70 The Kiss 3/9/1978
71 The Return of Hotsy Totsy 5/11/1978
72 Class Encounter of the Carvelli Kind 5/18/1978
Season 4
73 The Drop-Ins (1) 9/11/1978
74 The Drop-Ins (2) 9/11/1978
75 Don't Come Up and See Me Sometime 9/25/1978
76 Once Upon a Ledge 10/2/1978
77 The Sweatmobile 10/9/1978
78 Beau's Jest 10/16/1978
79 Barbarino's Boo-Boo 10/21/1978
80 X-Rated Education 10/28/1978
81 The Barbarino Blues 11/3/1978
82 Washington's Clone 11/11/1978
83 Frog Day Afternoon 11/25/1978
84 A Little Fright Music 12/2/1978
85 A Winter's Coat Tale 12/16/1978
86 Bride and Gloom 1/13/1979
87 Barbarino's Baby 2/3/1979
88 The Goodbye Guy 2/10/1979
89 Come Back, Little Arnold 2/24/1979
90 The Sweat Smell of Success 3/3/1979
91 The Gang Show 3/17/1979
92 Oo, Oo, I Do (1) 5/25/1979
93 Oo, Oo, I Do (2) 5/25/1979
94 I'm Okay, But You're Not 6/1/1979
95 The Breadwinners 6/8/1979