Casey Kasem hosts a dance contest at The Max.

When Lisa charges too much on her father's credit card, her friends help her cook up a scheme to sell her belongings so that she can pay back the bill.

After Screech gets struck by lightning, he gains the ability to see into the future, and Zack uses him to cheat on a mid term exam.

In an attempt to find out who Kelly wants to take to a dance, Zack and Screech bug the girls' sleepover party and the girls get revenge.

In an attempt to cheer Screech up enough to complete their science project, Zack pretends to know a girl who is interested in Screech, but things soon become complicated.

When his father is offered a transfer to Hawaii, Slater must decide whether to move there or stay at Bayside, and Zack takes full advantage of the situation.

After the school's drama teacher falls ill, a handsome substitute arrives, and quickly captivates the girls, much to the chagrin of the boys.

When Screech accidentally invents a seemingly miraculous zit cream, Zack sells it at school. However, it soon becomes clear that the cream has an alarming side effect.

During Career Week at school, Slater worries that continuing to focus on wrestling will not lead to a successful job. As a result, he quits the sport, worrying Zack, who has bet on Slater winning his next match.

Zack enlists Screech to tutor Kelly, when he finds out that she needs to pass an upcoming science test in order to go to a concert with him. When Screech and Kelly begin spending more time together than he'd expected, it makes him uncomfortable.

As part of an assignment for Business class, the gang forms a friendship bracelet company, but infighting soon leads to trouble and defection.

As part of a class project, Zack and Kelly, Slater and Jessie, and Screech and Lisa are paired up in mock marriages.

When Zack finds out that the elected student council president gets to leave school for a trip to Washington D.C., he runs against Jessie.

When Zack tries to win Kelly's heart through the use of subliminal messages, the plan ends up severely backfiring on him.

Zack's plans of winning over Kelly Kapowski on the first day of high school are foiled when new transfer student, A.C Slater, also competes for her.

When Bayside's rival school, Valley, revives the schools' ongoing prank war, the gang tries to get even.

Zack asks Kelly to be his date for the prom and she agrees, but when her father loses his job, she decides family is more important and gives up her chance to go, but cannot bring herself to tell Zack.

In order to avoid detention, Zack agrees to take part in a pilot program organized by the California Cadet Corps, but Army life proves to be much more difficult than he imagined.

The gang unearths Bayside's old school radio station and begins broadcasting again, before learning that The Max is to be closed if Max does not manage to pay $10,000 in back rent.

After becoming jealous of Slater's success in Driver's Ed class, Zack plots to get him into trouble, but his plan soon backfires.

Zack stays over at Screech's place for the weekend where the two of them along with Slater throw a party which is interrupted by the girls before breaking off a valuable item from Mrs. Powers.

Zack agrees to go on a date with Mr. Belding's niece Penny, but when Kelly invites him to her birthday party, he sends Screech instead.

When Mr. Belding tells Zack that he would like to see his father to discuss his bad grades, Zack hires an actor to play his father. However, things soon become complicated.

Bayside holds it's annual beauty contest. Jessie thinks it's sexist, even when Screech enters, but Belding says that it's only for girls.

Jessie turns to caffeine pills to keep up with her studies and her new singing group, Hot Sundae.

After a heated debate about the school calenders, a photographer decides to use Jessie, Lisa and Kelly in a photo shoot where Kelly is chosen as the winner of a contest that'll make her famous in France.

In an attempt to make money, Zack sets up a 900 number hotline, with Lisa offering advice to the students of Bayside. However, things go awry when Zack decides to keep the line running by dishing out bad advice.

After Zack breaks the school's video camera, he and the gang pretend Screech is an alien in order to win a photo competition. However, their picture soon arouses government suspicion.

If Zack wants to run the track meet, he better prepare his ancestry report where he gets help from an Indian.

Following a mix up, Kelly has to bring her baby brother Billy to school, and the gang must look after him.

Mr. Belding's brother, Rod, a substitute teacher, arrives at Bayside to take the gang's History class. Rod proves instantly popular, and soon Mr. Belding is dismayed to find that the kids prefer his brother to him.

Zack and Kelly's relationship is going from strength to strength, but is soon jeopardized when Zack falls for the new school nurse.

A.C. Slater and Jessie are finally a couple, but messes it up by disagreeing about how they will celebrate their coupledom, football versus ballet. Zach makes all the wrong moves by getting jealous of Kelly going out with an ex-boyfriend. After a fight breaks out at school, Mr. Belding tries to set the example of how couples should communicate, and after failing miserably, sides with the boys. Neither the guys or the girls want to be the first to apologize, but are miserable without their counterparts. Can Slater and Zach make up for their shortcomings to their girls before it's too late?

After finding out that Bayside's glee club will travel to Hawaii if they reach the finals of a nationwide competition, Zack signs up, and convinces the rest of the gang to join him.

Kelly gets a job working at The Max but may have to tell Zack it's over between them when she falls for her boss.

Due to Lisa's parents pulling some strings, the gang land summer jobs at Malibu Sands beach club, but Zack soon clashes with the owner Leon Carosi, and his initially abrasive daughter, Stacey.

The gang is forced to choose between supporting Kelly's relationship with Jeff and helping Zack cope with his grief over their break up, while Lisa plans her sweet sixteen party.

Zack bets Carosi that if he wins a volley ball game, Zack can buy Carosi's car. But Zack's team seems to be short handed when the star player is injured.

Zack sprains his knee before the big basketball game, and while in hospital learns that Lisa is a part-time candy-striper. However, he also learns that he will need surgery to repair his knee and worries that it may go wrong.

Malibu Sands is preparing to hold the annual Miss Liberty beauty pageant, and Zack, one of the judges, is pressured by Mr. Carosi to rig the competition in Stacey's favor.

It's the annual chess competition between Valley and Bayside. Screech is the head champion but Valley decides to get some dirt on Screech.

Zack and Stacey's relationship is going well until Stacey's boyfriend from Boston, Craig, surprises her at the beach club, leaving Zack devastated. Also, it's the annual ATV race and the gang decides to participate in it.

Zack begins dating a college girl named Danielle, and asks Screech to make fake IDs in order that they can hang out with her at a club. However, things become complicated when the guys see Kelly's boyfriend, Jeff, there with another girl.

Stacey is left in charge when her father is away. Everyone is pitching in to help her, but gold fever hits the beach, someone accidentally booked two parties at the same time, and the chefs decide to go on strike.

While putting up the new field goal post, oil is discovered. Soon the entire school is interested in the oil drilling, but Jessie doesn't like the idea.

It's the last day at the beach resort. Zack and Stacey are hoping to have one last time together, but Mr. Carosi doesn't approve of their romance. Meanwhile, a secret admirer is sending Slater some love letters.

Jessie's new stepbrother moves in from New York where he has tricks of his own, including blackmailing her friends.

After Lisa and Eric crashes Mr. Belding's car, Zack and the boys must find a way to repair the car before Belding returns; meanwhile Jessie still disapproves of Eric hanging out with Lisa.

The school holds a dance-date auction to pay for new cheerleading uniforms, where Zach, Slater and Screech are up for auction. Jessie is appalled at the whole idea. Lisa becomes an intellectual to impress a smart boy.

Zach finds $5000 in the mall, and plans to use the money to buy and then scalp tickets for a U2 concert.

Jessie's self-esteem takes a dive when she gets 1200 on the SAT's, while Zach gets 1502, and her chances to get into "Stansbury" College are hurt, so Zach hires James to help.

The gang travel to Palm Desert for Jessie's father's wedding. His job as manager of a luxury hotel there guarantees them wonderful accommodation, but Jessie takes an immediate dislike to her father's much younger bride.

As the wedding approaches, Jessie desperately tries to sabotage things, Zack and Kelly grow closer, Screech's quest for a date continues, and Slater attempts to impress Christina and her father.

When Kristy, a new student, is not allowed to join the wrestling team because of her gender, Zack and Jessie campaign for her to be given a chance. However, Jessie soon mistakenly becomes convinced that Kristy is interested in Slater.

A famous film star comes to Bayside to shoot an anti-drug public service announcement. The gang are enchanted by him, but when they go to a party at his house, they discover he is a hypocrite.

After falling asleep before band rehearsal, Zack dreams of the gang's band, Zack Attack, achieving worldwide fame, before succumbing to jealousy and infighting.

It is Cut Day at Bayside, a day on which students traditionally skip class. Zack wants to join in, but because one more absence will mean suspension for him, Mr. Belding is determined to keep an eye on him the entire day.

Zack, Slater, Screech, Kelly and Jessie are working at the mall for the holidays, where they befriend a homeless man and his daughter.

Zack learns that his new girlfriend is the homeless man's daughter. When she decides to get her dad a new coat and it turns up missing, her boss Mr. Moody accuses her of stealing it.

The gang wins a mystery weekend at a mansion where they are all part of a murder mystery.

The gang begin their senior year, but rather than it being a positive time, things turn sour when Zack and Slater clash over the new girl at school.

It's student-teacher week. Mr. Belding and Zack switch places. Kelly is Slater's History teacher, but Slater thinks she's being too serious about it. When she gives the class a test and everyone skips out on it, 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.

When Lisa receives word that a recruiter from FIT wants to interview her, the gang help her put on a fashion show at The Max. However, the close working conditions mean Zack and Lisa grow close, leaving Screech brokenhearted and bitter.

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

As the annual masquerade ball approaches, Zack and Slater make a bet about who can kiss Tori first. However, when she discovers their scheme, she decides to get revenge, while Screech's love letters to Lisa cause all manner of mix ups.

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 learn about the dangers of drinking and driving when, after getting drunk at a party, they get into an accident in Lisa's mother's car and try to cover it up.

Slater is horrified when his girlfriend from Germany arrives at Bayside as a new student. Zack helps hide the relationship from Jessie, but it is only a matter of time before she finds out, and Slater must figure out where his heart lies.

Zack appears to have negotiated a great deal on class rings for the senior class, but it turns out he has been scammed. While he plots revenge, a misguided bet between Tori and Lisa leads to Screech falling for Tori.

On Valentine's Day, the gang reminisce and share memories of love and past romance.

A member of Bayside's alumni dies, leaving $10,000 to the students. It is suggested that school sports should receive the money, but deciding which sports are most deserving leads to a battle of the sexes, and some cheating on Zack's part.

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 pleased when his younger sister J.B. arrives at Bayside, but his happiness is short lived, as she wants to date Zack, and Slater does not approve.

As the senior prom approaches, Zack discovers he still has feelings for Kelly. However, she already has a date, and Zack resorts to skulduggery to win her hand, while romance brews elsewhere.

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.

To avoid a Physics test, the gang throws a baby shower for Mr. Belding's wife Becky. As they are leaving the school, an earthquake strikes, trapping Zack and Tori in the elevator with Becky, who goes into labor.

Zack, Slater, Screech and Lisa reminisce about their summer working at Malibu Sands beach club and attending Jessie's father's wedding in Palm Desert.

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

The senior class want to leave a gift to Bayside's future students and suggest a contest to come up with a new school song. However, Zack decides to rig the competition in his favor in order to be remembered for more than just his bad behavior.

In 2003, the senior class find a video time capsule buried by the gang in 1993 before graduation, and Mr. Belding, still Bayside's principal, watches it with them.

As graduation approaches, Zack learns that he is just one credit short of graduating. Desperate to get extra credit, he joins Bayside's ballet company, and when illness strikes some of the other cast members, he calls on the gang for help.