 
     
        | Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S03E01 | Sweathogs Back-to-School Special | September 10, 1977 ABC (US) | 25 | |
| S03E02 | And Baby Makes Four (1) | September 15, 1977 ABC (US) | 25 | |
| S03E03 | And Baby Makes Four (2) | September 15, 1977 ABC (US) | 25 | |
| S03E04 | The Visit | September 22, 1977 ABC (US) | 25 | |
| S03E05 | Buddy, Can You Spare a Million? | September 29, 1977 ABC (US) | 25 | |
| S03E06 | Just Testing | October 6, 1977 ABC (US) | 25 | |
| S03E07 | The Deprogramming of Arnold Horshack | October 13, 1977 ABC (US) | 25 | |
| S03E08 | What a Move! | October 20, 1977 ABC (US) | 25 | |
| S03E09 | A Novel Idea | October 27, 1977 ABC (US) | 25 | |
| S03E10 | Barbarino in Love (1) | November 3, 1977 ABC (US) | 25 | |
| S03E11 | Barbarino in Love (2) | November 10, 1977 ABC (US) | 25 | |
| S03E12 | Kotter for Vice Principal | November 17, 1977 ABC (US) | 25 | |
| S03E13 | Swine and Punishment | November 24, 1977 ABC (US) | 25 | |
| S03E14 | Epstein's Madonna | December 8, 1977 ABC (US) | 25 | |
| S03E15 | Sweathog Christmas Special | December 15, 1977 ABC (US) | 25 | |
| S03E16 | Sweatwork | December 22, 1977 ABC (US) | 25 | |
| S03E17 | Meet Your New Teacher: Batteries Not Included | January 5, 1978 ABC (US) | 25 | |
| S03E18 | Angie | January 12, 1978 ABC (US) | 25 | |
| S03E19 | Epstein's Term Paper | January 19, 1978 ABC (US) | 25 | |
| S03E20 | There's No Business (1) | January 26, 1978 ABC (US) | 25 | |
| S03E21 | There's No Business (2) | February 2, 1978 ABC (US) | 25 | |
| S03E22 | What Goes Up | February 9, 1978 ABC (US) | 25 | |
| S03E23 | Good-Bye, Mr. Kripps | February 16, 1978 ABC (US) | 25 | |
| S03E24 | Horshack and the Madame X | February 23, 1978 ABC (US) | 25 | |
| S03E25 | The Kiss | April 13, 1978 ABC (US) | 25 | |
| S03E26 | The Return of Hotsy Totsy | May 11, 1978 ABC (US) | 25 | |
| S03E27 | Class Encounter of the Carvelli Kind season finale | May 18, 1978 ABC (US) | 25 |