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After Grandpa tells Arnold that he never got his grade school diploma, Arnold convinces him to come to go back to school at P.S. 118.
Hey Arnold!
Season 4
15
September 11, 1999
11 minutes
3.5/5
Craig Bartlett
Writer
Joe Ansolabehere
Story
Steve Viksten
Story
Craig Bartlett
Story
Frank Weiss
Director
Mario Piluso
Director