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- 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
