Continuity mistake: In the 1st season (the Ms. Bliss episodes), Zack mentioned to Screech in one episode that he had good news for Screech's brother. But in the Bayside episodes, Screech confirmed being an only child (specifically said in this episode).
Saved by the Bell (1989)
1 mistake in Slater's Sister - chronological order
Starring: Mario Lopez, Mark-Paul Gosselaar, Dustin Diamond, Lark Voorhies
Mr. Belding: Go to class, learn something.
More trivia for Saved by the Bell
Question: What happened to Kelly and Jessie in the episodes with Tori? Can someone explain what went on there.
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Answer: As far as I can tell Jessie and Kelly decided to leave the show because their contracts were up and they wanted to pursue other things. But there were still episodes of Saved by the Bell left to tape so Tori came along to fill that void. Jessie and Kelly were supposedly still at Bayside, but they were "off-screen." The Graduation episode was filmed before Kelly and Jessie left the show.
ACertainShadeofGreen