|"One Stayed Clean"|
|Air Date||September 11, 1999|
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One Stayed Clean is the first episode of Recess's third season which was first broadcast on September 11, 1999.
On class picture day, the kids vow to keep Gus clean as he's never had a class picture of him taken. But can the gang manage to stay clean until the end of the day?
- Cornchip Girl is shown to be a kindergartener in this episode, which is never seen in any other episodes.
- This episode is one of the fans' three favorite episodes shown as bonus episodes on the Recess: All Growed Down DVD.
- T.J. is wearing the same outfit he wore at the end of The Experiment.
- The SpongeBob SquarePants episode Picture Day has a plot almost identical to this.
- Gretchen's outfit in this episode is similar to one of the more famous outfits worn by Minnie Mouse, usually in promotional materials.
- This is the first episode when Aria Noelle Curzon voices Cornchip Girl.
- This episode aired on September 11, 1999, two years before the 9/11 attacks
- This episode premiered on the thirty-eighth birthday of E.G. Daily, who voiced Captain Sticky.
- T.J. Detweiler - Andrew Lawrence
- Vince LaSalle - Ricky D'Shon Collins
- Ashley Spinelli - Pamela Segall-Adlon
- Gretchen Grundler/Kid #2 - Ashley Johnson
- Mikey Blumberg/Tubby - Jason Davis
- Gus Griswald - Courtland Mead
- Miss Finster - April Winchell
- Miss Grotke - Allyce Beasley
- Randall Weemes - Ryan O'Donohue
- Captain Sticky/Kid #1/Kid #3/Kid #5 - E.G. Daily
- Ashley Armbruster - Anndi McAfee
- Ashley Boulet/Kid #4 - Francesca Smith
- Earwin Lawson - Erik von Detten
- Cornchip Girl - Aria Noelle Curzon
- Gus's Dad - Sam McMurray
- Photographer/Soldier - Gregg Berger