- S1.E1 ∙ The Great Debate
- S1.E2 ∙ Basket Case
- S1.E3 ∙ Welcome Back (Pilot)
- S1.E4 ∙ Whodunit?
- S1.E5 ∙ The Election
- S1.E6 ∙ No More Mr. Nice Guy
- S1.E7 ∙ Classroom Marriage
- S1.E8 ∙ One of Our Sweathogs Is Missing
- S1.E9 ∙ Mr. Kotter, Teacher
- S1.E10 ∙ The Reunion
- S1.E11 ∙ Barbarino's Girl
- S1.E12 ∙ California Dreamin'
- S1.E13 ∙ Arrividerci, Arnold
- S1.E14 ∙ The Longest Weekend
- S1.E15 ∙ The Sit-In
- S1.E16 ∙ Follow the Leader: Part 1
- S1.E17 ∙ Follow the Leader: Part 2
- S1.E18 ∙ Dr. Epstein, I Presume
- S1.E19 ∙ One Flu Over the Cuckoo's Nest
- S1.E20 ∙ The Telethon
- S1.E21 ∙ Kotter Makes Good
- S1.E22 ∙ Father Vinnie
- S2.E1 ∙ Career Day
- S2.E2 ∙ Inherit the Halibut
- S2.E3 ∙ Sweatside Story
- S2.E4 ∙ The Fight
- S2.E5 ∙ The Museum
- S2.E6 ∙ Gabe Under Pressure
- S2.E7 ∙ Sweathog, Nebraska Style
- S2.E8 ∙ Sadie Hawkins Day
- S2.E9 ∙ Hello Ms. Chips
- S2.E10 ∙ Horshack vs. Carvelli
- S2.E11 ∙ Sweathog Clinic for the Cure of Smoking
- S2.E12 ∙ Hark, the Sweatkings
- S2.E13 ∙ A Love Story
- S2.E14 ∙ Caruso's Way
- S2.E15 ∙ Sweatgate Scandal
- S2.E16 ∙ Kotter and Son
- S2.E17 ∙ Chicken a la Kotter
- S2.E18 ∙ Has Anyone Seen Arnold?
- S2.E19 ∙ There Goes Number 5
- S2.E20 ∙ The Littlest Sweathog
- S2.E21 ∙ Radio Free Freddie
- S2.E22 ∙ I'm Having Their Baby
- S2.E23 ∙ I Wonder Who's Kissing Gabe Now
- S3.E1 ∙ Sweathog Back-to-School Special
- S3.E2 ∙ And Baby Makes Four: Part 1
- S3.E3 ∙ And Baby Makes Four: Part 2
- S3.E4 ∙ And Baby Makes Four: Part 3
- S3.E5 ∙ Brother, Can You Spare a Million?
- S3.E6 ∙ Just Testing
- S3.E7 ∙ The Deprogramming of Arnold Horshack
- S3.E8 ∙ What a Move
- S3.E9 ∙ A Novel Idea
- S3.E10 ∙ Barbarino in Love: Part 1
- S3.E11 ∙ Barbarino in Love: Part 2
- S3.E12 ∙ Kotter for Vice Principal
- S3.E13 ∙ Swine and Punishment
- S3.E14 ∙ Epstein's Madonna
- S3.E15 ∙ A Sweathog Christmas Special
- S3.E16 ∙ Sweatwork
- S3.E17 ∙ Meet Your New Teacher: Batteries Not Included
- S3.E18 ∙ Angie
- S3.E19 ∙ Epstein's Term Paper
- S3.E20 ∙ There's No Business: Part 1
- S3.E21 ∙ There's No Business: Part 2
- S3.E22 ∙ What Goes Up
- S3.E23 ∙ Goodbye, Mr. Kripps
- S3.E24 ∙ Horshack and the Madame X
- S3.E25 ∙ The Kiss
- S3.E26 ∙ The Return of Hotsy Totsy
- S3.E27 ∙ Class Encounters of the Carvelli Kind
- S4.E1 ∙ The Drop-Ins: Part 1
- S4.E2 ∙ The Drop-Ins: Part 2
- S4.E3 ∙ Don't Come Up and See Me Sometime
- S4.E4 ∙ Once Upon a Ledge
- S4.E5 ∙ The Sweatmobile
- S4.E6 ∙ Beau's Jest
- S4.E7 ∙ Barbarino's Boo-Boo
- S4.E8 ∙ X-Rated Education
- S4.E9 ∙ The Barbarino Blues
- S4.E10 ∙ Washington's Clone
- S4.E11 ∙ Frog Day Afternoon
- S4.E12 ∙ A Little Fright Music
- S4.E13 ∙ A Winter's Coat Tale
- S4.E14 ∙ Bride and Gloom
- S4.E15 ∙ Barbarino's Baby
- S4.E16 ∙ The Goodbye Guy
- S4.E17 ∙ Come Back, Little Arnold
- S4.E18 ∙ The Sweat Smell of Success
- S4.E19 ∙ The Gang Show
- S4.E20 ∙ Oo-Oo, I Do: Part 1
- S4.E21 ∙ Oo-Oo, I Do: Part 2
- S4.E22 ∙ I'm Okay, But You're Not
- S4.E23 ∙ The Bread Winners
Welcome Back, Kotter (1975)
Genre: Comedy
Actor:Gabe Kaplan , Ron Palillo , John Travolta , Marcia Strassman , John Sylvester White , Robert Hegyes , Lawrence Hilton-Jacobs , Stephen Shortridge , Helaine Lembeck , Vernee Watson , Charles Fleischer , Bob Harcum , Melonie Haller , Irene Arranga , Debralee Scott , Dennis Bowen , Ellen Travolta , Linda McCullough
