Fair rating?Hey Arnold!· Season 4 · Episode 15
Back to School
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.
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#10In Season 4of 29 rated episodes
#47All-timeof 169 rated episodes
−0.0vs season avgSeason 4 averages 7.0
1999First airedSeptember 11, 1999
