Other mistake: In the scene where the Glee Club is discussing that Violet will win them the contest, Violet leaves as she is upset about Screech. Zack then comments about "No one having a voice like Violet's". If you look at Mr. Tuttle, he mouths the words that Zack says.
Other mistake: In the opening credits of Season 4 (the Tori episodes), when Leanna Creel is shown, the second of her three sequence shots is in reverse (where she is sitting at the Max in a red outfit in front of a candle). In the episode where that clip is from, she was sitting to the right of the table facing left, but in the opening sequence, she is on the left of it facing right (mirrored image).





Answer: The show that took place in Indiana that you are referring to was titled "Good Morning Miss Bliss." This show only lasted one season. The kids on the show, however, were popular so they decided to create a spin-off titled "Saved By the Bell," that aired on Saturday Mornings. I'm sure they changed the location because they thought the California setting would make the show more fun and watchable for pre-teens and teens.
ACertainShadeofGreen