Zach and Slater might turn back into rivals when they each fall for a new girl

It's student-teacher week. Belding and Zack switch places. Kelly is Slater's teacher, but Slater thinks she's being too overboard. When she gives a test, Zack faces a hard decision: to be their friend or their leader

During a project for TV ads, Screech comes up with a new flavor of sauce, but the gang might go out of business when Screech becomes the target of a snobbish girl.

Transfer student Tori is introduced in this episode, but Zack and Tori don't hit it off, and they are paired up for an ad project. Lisa alienates the Dance Committee before the Fall Ball.

Zack helps Lisa put on a fashion show for college. But when Zack and Lisa fall for each other, Screech strikes back.

Zack participates in a Bayside's teen hot-line, and becomes close to a disabled girl. Meanwhile, Screech takes on a rambunctious boy.

Zack and Slater bet on who can kiss Tori first, and their best chance will come at a masquerade ball. Lisa has a secret admirer, Screech, but she thinks it's Zack.

If Zack can just get out of detention with Mr. Belding, he can win a trip to Hawaii. Instead the whole gang ends up in detention with him, trying to get him out.

A.C. and his father fight over where he should attend college and Zack tries to fix it. Jessie becomes a cheerleader and worries about college acceptances.

The gang celebrates Lisa's win as Homecoming Queen at Ox's party where they drink, and they land in big trouble when they total Lisa's mother's car.

Slater's ex-girlfriend comes to Bayside and Screech's love machine shows that her and Slater still have feelings for each other, much to the annoyance of Jessie.

Zack decides to get all the seniors including Lisa, Slater and Screech, school rings. He gets them from a salesman but he learns he's been had when the rings turn out to be phony.

On Valentine's Day the gang flashes back to the romantic adventures they've had in the past.

A favorite graduate dies and leaves $10,000 in his will. This creates a battle of the sexes to see who gets the money.

To go on a ski trip, the gang conjures up a teacher's strike only to learn that it could affect the academic bowl.

Slater is rejoined by his long lost sister who he hasn't seen in years and Zack finds himself falling for her. Slater doesn't approve of their romance and is determine to stop it.

The Gang tries to raise enough money to hold a senior prom.

The gang decide to make a video version of the annual yearbook, but Zack has other ideas and decides to use it to sell a dating video made from the video clips. However, he regrets his decision after Screech mistakenly puts Kelly on the video and she starts getting calls from other guys.

When his friends forget his birthday, they try to throw him a late surprise party. Screech, upset that his friends didn't remember, takes advantage of his new hall monitor position and makes it difficult for them to plan it.

The gang put on a rap version of "Snow White and the Seven Dwarfs". However, when Jessie and Zack find out they have to kiss in the last scene they start to doubt their friendship and question their feelings for each other, falling out with Kelly and Slater in the process.

Tori and Zack get caught in an elevator during an earthquake, along with Mr. Belding's wife who goes into labor there.

Zack stays home on the first day of school, and looks back on the times he spent at Malibu Sands.

Screech is left to look after Slater's chameleon when he goes away, but things go awry.

The school song needs changing, and the gang decide to write a new song. But Zack gets all of them to compete against one another. Then they find out what's going on and gets him back by sabotaging his likely-to-win song.

It's 2003, and Mr. Belding and the new class finds a video time capsule from the class of 1993, which is Zack and the gang. The video shows the funny and the touching moments that the gang shared with each other.

It's graduation day, but Zack will not be able to join the gang when they get their diplomas. It seems that he is a credit short of graduating and the only way he can get it back is by doing the unbelievable- BALLET!