Welcome Back, Kotter - Season 2 - Eps 19: There Goes Number 5 (2)
When Arnold finally shows back up at school, it's discovered that his absence was due to the recent death of his fifth father. A feeling of responsibility within him, Arnold sets out to find a job to help support his siblings and his mother, who's only priority lies in finding a replacement father for her kids.
About Welcome Back, Kotter

Title: Welcome Back, Kotter
First Air Date: 1975-09-09
Last Air Date: 1979-06-08
Status: Ended
Rating: 7.235/10 (from 51 votes)
Language: EN
Seasons: 5
Total Episodes: 95
Network: ABC
Genres: Comedy, Family
Production Companies: Wolper Productions
Synopsis
Welcome Back, Kotter is an American television sitcom starring Gabe Kaplan and featuring a young John Travolta. Videotaped in front of a live studio audience, it originally aired on the ABC network from September 9, 1975, to June 8, 1979.
Cast

Gabe Kaplan
Gabe Kotter

John Travolta
Vinnie Barbarino

John Sylvester White
Michael Woodman

Ron Palillo
Arnold Horshack

Robert Hegyes
Juan Epstein

Lawrence Hilton-Jacobs
Freddie Washington

Marcia Strassman
Julie Kotter

Stephen Shortridge
Beau Shortridge