The Bread Winners
I'm Okay, But You're Not
Oo-Oo, I Do: Part 2
Oo-Oo, I Do: Part 1
The Gang Show
The Sweat Smell of Success
Come Back, Little Arnold
The Goodbye Guy
Barbarino's Baby
Bride and Gloom
A Winter's Coat Tale
A Little Fright Music
Frog Day Afternoon
Washington's Clone
The Barbarino Blues
X-Rated Education
Barbarino's Boo-Boo
Beau's Jest
The Sweatmobile
Once Upon a Ledge
Don't Come Up and See Me Sometime
The Drop-Ins: Part 2
The Drop-Ins: Part 1
Class Encounters of the Carvelli Kind
The Return of Hotsy Totsy
The Kiss
Horshack and the Madame X
Goodbye, Mr. Kripps
What Goes Up
I Wonder Who's Kissing Gabe Now
I'm Having Their Baby
Radio Free Freddie
The Littlest Sweathog
There Goes Number 5
Has Anyone Seen Arnold?
Father Vinnie
Kotter Makes Good
The Telethon
One Flu Over the Cuckoo's Nest
Dr. Epstein, I Presume
Follow the Leader: Part 2
There's No Business: Part 2
There's No Business: Part 1
Epstein's Term Paper
Angie
Meet Your New Teacher: Batteries Not Included
Sweatwork
A Sweathog Christmas Special
Epstein's Madonna
Swine and Punishment
Kotter for Vice Principal
Barbarino in Love: Part 2
Barbarino in Love: Part 1
A Novel Idea
What a Move
The Deprogramming of Arnold Horshack
Just Testing
Brother, Can You Spare a Million?
And Baby Makes Four: Part 3
And Baby Makes Four: Part 2
And Baby Makes Four: Part 1
Sweathog Back-to-School Special
Chicken a la Kotter
Kotter and Son
Sweatgate Scandal
Caruso's Way
A Love Story
Hark, the Sweatkings
Sweathog Clinic for the Cure of Smoking
Horshack vs. Carvelli
Hello Ms. Chips
Sadie Hawkins Day
Sweathog, Nebraska Style
Gabe Under Pressure
The Museum
The Fight
Sweatside Story
Inherit the Halibut
Career Day
Follow the Leader: Part 1
The Sit-In
The Longest Weekend
Arrividerci, Arnold
California Dreamin'
Barbarino's Girl
The Reunion
Mr. Kotter, Teacher
One of Our Sweathogs Is Missing
Classroom Marriage
No More Mr. Nice Guy
The Election
Whodunit?
Welcome Back (Pilot)
Basket Case
The Great Debate