Overview
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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4 - 1Full Moon March 10, 1999 -
4 - 2Student Teacher March 10, 1999
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4 - 3Big Gino March 15, 1999
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4 - 4Jamie O in Love March 15, 1999
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4 - 5Eugene's Birthday March 17, 1999
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4 - 6Stinky's Pumpkin March 17, 1999
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4 - 7The Beeper Queen March 29, 1999
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4 - 8Oskar Can't Read? March 29, 1999
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4 - 9Dinner for Four March 31, 1999
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4 - 10Phoebe Skips March 31, 1999
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4 - 11Helga's Parrot April 05, 1999
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4 - 12Chocolate Turtles April 05, 1999
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4 - 13Love and Cheese April 07, 1999
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4 - 14Weighing Harold April 07, 1999
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4 - 15Back to School September 11, 1999
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4 - 16Egg Story September 11, 1999
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4 - 17It Girl September 18, 1999
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4 - 18Deconstructing Arnold September 18, 1999
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4 - 19Grudge Match September 25, 1999
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4 - 20Polishing Rhonda September 25, 1999
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4 - 21Weird Cousin October 09, 1999
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4 - 22Baby Oskar October 09, 1999
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4 - 23Grandpa's Sister October 16, 1999
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4 - 24Synchronized Swimming October 16, 1999
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4 - 25Helga Sleepwalks October 23, 1999
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4 - 26Fighting Families October 23, 1999
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4 - 27Headless Cabbie October 30, 1999
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4 - 28Friday the 13th October 30, 1999
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4 - 29Veterans Day November 06, 1999
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4 - 30Helga on the Couch December 04, 1999
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4 - 31Dino Checks Out December 11, 1999