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.
Factual error: It seemed like they had several senior years in the show? They had The Prom year when Kelly, Jesse, were there. Then they had senior year when Tori was on the show when they did the senior Class Rings.
Suggested correction: Actually the first senior year was going to be the end of the show. However they wanted to add another season so they had a second senior year and added the new character.
Visible crew/equipment: During the opening credits, as Zack Morris walks into the frame of the school store, you can see the boom microphone briefly lower into the shot up near the EXIT sign on the wall. (00:01:20)
Continuity mistake: When the teacher is going through the study fast, you see Kelly stretch her wrist as it hurts from writing so fast. While she is stretching, behind her you see Zack putting on his headphones. A few seconds later the camera is on him and he is putting the headphones on again.
Save the Max - S2-E3
Revealing mistake: When they are reading the reviews in the newspaper, look at the back page. It's the sports section. Next when Jessie comes back to Zack and tells him what Mr Belding was hiding, she says the paper is from 1968. But look at the back of that paper also. They are using the exact same paper. The reviews and the 1968 paper are the exact same.
Continuity mistake: At the end when they finish the commercial, nothing at all is the same on the playback as what they showed them do. None was the same. The wording and also the places and stances everyone was doing. The entire thing was different in the playback.
