Continuity: When Zack is in middle school, his teacher, Miss Bliss wants to talk to his father. At that time his father's name is Peter Morris and he is an older man and unmarried. When Zack is in high school and Mr. Belding wants to talk to him about the ski trip, his name is Derrik Morris and he has a mother.

Audio problem: When Violet is singing in front of the audience at the final glee club performance, her voice does not match her lips.

Continuity: In the scene where Max has Zack bring Kelly a Coke, you can see the glass only has one straw in it. You can verify that it's simply not two straws stuck together when he lays it on Kelly's table. As he lays it down, the straw swoops around the outer perimeter of the glass and it can be verified that it's only one straw. However, when Kelly decides to take a drink of it there are now two straws in the glass.

Revealing: When Zack is given the old newspaper with Mr. Belding's article, the headline reads, "Picture on pages 3 and 4." When he looks at the picture, he looks at the middle of the paper, with quite a few pages at both sides of the newspaper, though 3 and 4 would be near the front.

Continuity: In this episode, Screech's mother kisses her Elvis statue before her trip while it is facing towards the right; indicating that this is the correct way that is should be facing. However, when she comes home after her trip the "new" statue is facing the same direction; right. She complains and says that the statue should always face towards the kitchen so he can see her cook; which is towards the left.

Continuity: Kelly mentions something her brother did when he was 19, but in all other shows, Kelly makes it clear that she's the oldest of her siblings, and she's in high school.

Continuity: When Zach gives the presentation for the electronic date book, the lockers seen out in the hallway are all light blue. When Tori and Zach walk out that same classroom, into the hall, all the lockers are now orange.

Visible crew/equipment: After the fashion show when Zach says "Sorry Lisa, I don't know what to say" an entire boom microphone assembly is visible and snatched out of view at the top of the screen.

Plot hole: Earlier in the series Slater said more than once that he was an only child. All the sudden he has a sister.

Continuity: Zack messes with the piano so it will give him a chance of winning. When Tori plays it sounds like she is messing up. But immediately following that screech plays the piano with no problem and there was no time to fix the piano.