The photo of Mr. Belding in the old school newspaper is twice said to be on "pages 3 and 4," but pages 3 and 4 in any standard newspaper would appear back to back, not side by side.
Goof: Near the end when Zack introduces Screech as Al Bundy, the mic is visible above their heads.
In this episode Kelly says to her father that there are 7 other people living in her house, besides her. Meaning 5 brothers and sisters, and her mother and father. But in "Cream for a Day" she stated she is one of seven children in the Kapowski family.
Despite the couplings of Zack/Kelly and Slater/Jessie, there are several episodes to follow, that imply these couples are not together. In fact, it will not be until mid season that these relationships are clearly established and continue week to week.
This episode focuses on the prom. However, they are only high school sophmores. They should not be attending a prom of their own for at least another year and even that would be called a Junior Prom. So wouldn't that make this really just a 10th grade formal?
This episode marks Jessie and Slater's first "date".
Zack tells Slater that he has been waiting for two years to get a chance with Kelly. However, in the series Good Morning Miss Bliss which was set in the previous school year, Zack mentions interest in several girls but never mentions anyone named Kelly.
Despite it being the gang's first day of high school, Mr. Belding already knows Zack from being his principal in junior high (Good Morning, Miss Bliss) although they never directly say Mr. Belding is just starting at the high school.
Slater has been in 14 schools in the last three years.
When Lisa asked why she had to go with Screech, Mr. Belding said that he put them in alphabetical order. That can't be true because Screech's last name starts with a P and Lisa's last name starts with a T. Slater and Jessie are paired off too and their last names start with an S and since S is three letters after P and one letter before T, they didn't really get put in alphabetical order.
Goof: This is the only time that Lisa is "allergic" to Screech. It does not happen in prior/future episodes.
It was Lisa who was getting the Fashion Club to make the friendship bracelets for Zack's company, and she stays with Zack's company after Jesse, Slater, and Kelly leave to form their own company. The next day they form Buddy Bands, a similar idea to Zack's friendship bracelets--however, since they don't have Lisa or the Fashion Club, it is never established how they produced the Buddy Bands, or how they intended on continuing to produce enough to compete with the friendship bracelets.
Buddy Bands cost $3.95. However, when Zack buys one (right after he closes down shop), he hands Slater a single cash bill, and recieves no change.
The flag on Zack's bedroom door is the flag of Australia.
The first time Kelly goes to Screech's house to be tutored, he's wearing a jacket with the word "FETISH" on the back. Fetish is defined as: anything to which one is irrationally devoted, as well as, any nonsexual object that abnormally excites erotic feelings. I'm assuming it's an in-joke for Kelly's feelings towards Screech.
Goof: When Screech and Mr. Belding are in the office, Belding finds out that Zack and Slater are at the door. When he opens the door and they fall down, the boom mic can be seen.
After tasting Slater's cake, Mrs. Cummings comments that she's taking his cake home. But in the next scene at the Max, the gang is scene eating it.
There is no concievable reason why Nedick would come to the Max to pressure Slater into wrestling (especially at the behest of Zack) because--as Nedick himself points out a moment later--without Slater to wrestle him, Nedick automatically wins the bet he had against Zack, and Zack's dirt-bike.
The fake 'beer belly' that is sticking out of the older wrestler-Slater's shirt is obviously fake: when he turns to the side, you can see that it is clearly over the shirt, not coming out from under it; you can also see the straps to it.
In this episode, Kelly decides that she'd like to be either an actress or a housewife. It seems she changes her mind, though, as in a College Years episode a few years later, she tells Zack she is interested in medicine.