Welcome Back, Kotter: Episodes
Season 4
| # | Name | Date |
|---|---|---|
| 1 | The Drop-Ins (1) | 11/25/78 |
| 2 | The Drop-Ins (2) | 9/18/78 |
| 3 | Beau's Jest | 9/25/78 |
| 4 | Don't Come Up and See Me Sometime | 9/11/78 |
| 5 | Once Upon a Ledge | 10/2/78 |
| 6 | The Sweatmobile | 9/11/78 |
| 7 | Barbarino's Boo-Boo | 10/21/78 |
| 8 | X-Rated Education | 10/28/78 |
| 9 | The Barbarino Blues | 11/4/78 |
| 10 | Washington's Clone | 11/11/78 |
| 11 | Frog Day Afternoon | 10/9/78 |
| 12 | A Little Fright Music | 12/2/78 |
| 13 | A Winter's Coat Tail | 12/16/78 |
| 14 | Bride and Gloom | 1/13/79 |
| 15 | Barbarino's Baby | 2/3/79 |
| 16 | The Goodbye Guy | 2/10/79 |
| 17 | Come Back, Little Arnold | 2/24/79 |
| 18 | The Sweat Smell of Success | 3/3/79 |
| 19 | The Gang Show | 3/17/79 |
| 20 | Oo, Oo, I Do (1) | 5/25/79 |
| 21 | Oo, Oo, I Do (2) | 5/25/79 |
| 22 | I'm Okay, But You're Not | 6/1/79 |
| 23 | The Breadwinners | 6/8/79 |
Season 3
| # | Name | Date |
|---|---|---|
| 1 | Sweathogs Back-to-School Special | 9/29/77 |
| 2 | And Baby Makes Four (1) | 9/15/77 |
| 3 | And Baby Makes Four (2) | 9/15/77 |
| 4 | The Visit | 9/22/77 |
| 5 | Brother, Can You Spare a Million? | 10/6/77 |
| 6 | Just Testing | 10/13/77 |
| 7 | The Deprogramming of Arnold Horshack | 10/20/77 |
| 8 | What a Move | 10/27/77 |
| 9 | A Novel Idea | 11/3/77 |
| 10 | Barbarino in Love (1) | 11/10/77 |
| 11 | Barbarino in Love (2) | 11/17/77 |
| 12 | Kotter for Vice Principal | 11/24/77 |
| 13 | Swine and Punishment | 12/8/77 |
| 14 | Epstein's Madonna | 1/12/78 |
| 15 | Sweathog Christmas Special | 1/5/78 |
| 16 | Sweatwork | 1/19/78 |
| 17 | Meet Your New Teacher: Batteries Not Included | 1/26/78 |
| 18 | Angie | 12/22/77 |
| 19 | Epstein's Term Paper | 2/2/78 |
| 20 | There's No Business Like Show Business (1) | 2/9/78 |
| 21 | There's No Business Like Show Business (2) | 2/16/78 |
| 22 | What Goes Up | 2/23/78 |
| 23 | Good-Bye, Mr. Kripps | 3/9/78 |
| 24 | Horshack and the Madame X | 5/18/78 |
| 25 | The Kiss | 5/11/78 |
| 26 | The Return of Hotsy Totsy | 9/10/77 |
| 27 | Class Encounter of the Carvelli Kind | 12/15/77 |
Season 2
| # | Name | Date |
|---|---|---|
| 1 | Career Day | 9/23/76 |
| 2 | Inherit the Halibut | 9/30/76 |
| 3 | Sweatside Story | 10/7/76 |
| 4 | The Fight | 10/21/76 |
| 5 | The Museum | 10/28/76 |
| 6 | Gabe Under Pressure | 11/4/76 |
| 7 | Sweathog, Nebraska Style | 11/11/76 |
| 8 | Sadie Hawkins Day | 11/18/76 |
| 9 | Hello, Ms. Chips | 12/2/76 |
| 10 | Horshack vs. Carvelli | 12/9/76 |
| 11 | Sweathog Clinic for the Cure of Smoking | 12/16/76 |
| 12 | Hark, the Sweatkings | 12/23/76 |
| 13 | A Love Story | 12/30/76 |
| 14 | Caruso's Way | 1/6/77 |
| 15 | Sweatgate Scandal | 1/13/77 |
| 16 | Kotter and Son | 1/20/77 |
| 17 | Chicken a la Kotter | 1/27/77 |
| 18 | Has Anyone Seen Arnold? (1) | 2/3/77 |
| 19 | There Goes Number 5 (2) | 2/3/77 |
| 20 | The Littlest Sweathog | 2/10/77 |
| 21 | Radio Free Freddie | 2/17/77 |
| 22 | I'm Having Their Baby | 2/24/77 |
| 23 | I Wonder Who's Kissing Gabe Now? | 3/3/77 |
Season 1
| # | Name | Date |
|---|---|---|
| 1 | Welcome Back (Pilot) | 9/23/75 |
| 2 | The Great Debate | 9/9/75 |
| 3 | Basket Case | 9/16/75 |
| 4 | Whodunit? | 9/30/75 |
| 5 | The Election | 10/7/75 |
| 6 | No More Mister Nice Guy | 10/14/75 |
| 7 | Classroom Marriage | 10/21/75 |
| 8 | One of Our Sweathogs is Missing | 10/28/75 |
| 9 | Mr. Kotter, Teacher | 11/4/75 |
| 10 | The Reunion | 11/18/75 |
| 11 | Barbarino's Girl | 11/25/75 |
| 12 | California Dreamin' | 12/2/75 |
| 13 | Arrividerci, Arnold | 12/16/75 |
| 14 | The Longest Weekend | 1/6/76 |
| 15 | The Sit-In | 1/13/76 |
| 16 | Follow the Leader (1) | 1/20/76 |
| 17 | Follow the Leader (2) | 1/22/76 |
| 18 | Dr. Epstein, I Presume | 1/29/76 |
| 19 | One Flu Over the Cuckoo's Nest | 2/5/76 |
| 20 | The Telethon | 2/12/76 |
| 21 | Kotter Makes Good | 2/19/76 |
| 22 | Father Vinnie | 2/26/76 |