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Hey Arnold!
Season 4 · Episode 15
Back to School
7.011mSeptember 11, 1999
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.
Episodes
- Episode 1Full Moon
- Episode 2Student Teacher
- Episode 3Big Gino
- Episode 4Jamie O in Love
- Episode 5Eugene's Birthday
- Episode 6Stinky's Pumpkin
- Episode 7The Beeper Queen
- Episode 8Oskar Can't Read?
- Episode 9Dinner for Four
- Episode 10Phoebe Skips
- Episode 11Helga's Parrot
- Episode 12Chocolate Turtles
- Episode 13Love and Cheese
- Episode 14Weighing Harold
- Episode 15Back to School
- Episode 16Egg Story
- Episode 17It Girl
- Episode 18Deconstructing Arnold
- Episode 19Grudge Match
- Episode 20Polishing Rhonda
- Episode 21Weird Cousin
- Episode 22Baby Oskar
- Episode 23Grandpa's Sister
- Episode 24Synchronized Swimming
- Episode 25Helga Sleepwalks
- Episode 26Fighting Families
- Episode 27Headless Cabbie
- Episode 28Friday the 13th
- Episode 29Veterans Day
- Episode 30Helga on the Couch
- Episode 31Dino Checks Out