"Prom Night" is the twenty-first episode of the third season of The Suite Life on Deck and the seventieth episode overall.
After the students pull a prank on Mr. Moseby, he cancels the senior prom. So, Zack comes up with a plan to have a "secret prom". Meanwhile, Bailey tries to get everybody to vote her for prom queen while Cody helps Woody ask Addison to prom. Ultimately, the kids award the roles of king and queen to Mr. Moseby and Ms. Tutweiller after everyone votes "not Bailey." After prom, Moseby gets revenge on Zack by doing the same prank to him as he had done earlier.
- Matthew Timmons as Woody Fink, Erin Cardillo as Emma Tutweiller, Zoey Deutch as Maya, Rachael Kathryn Bell as Addison