The main kids wish they could have the overcrowded school to themselves, then surprisingly get their wish.

Thinking his family is moving away again, Gus moves under the jungle gym to avoid leaving his friends and school

Gus starts an obsessive crusade to kill all the germs in the world, while Mikey will do anything to save them.

Señor Fusion: the Movie finally opens and T.J. vows to be there at its first screening.

Principal Prickly and Miss Finster deem T.J.'s word "whomps" as a cuss and punish him for it, starting a scandal that leads all the way to the board of education.

T.J. and Vince manage to convince everyone that the bad haircut they gave Mikey is actually cool.

Mikey makes the other kids regret not letting them play on their team for the playground's soccer tourney.

Prickly finally gets his appointment to Spiro T. Agnew Middle School. But the kids try to make him stay after they meet the new Principal Slicer.

When the playground goes on the monsticker standard T.J. goes down the path from poverty to wealth.

The Ashleys try to force Spinelli to be just like them when Spinelli's first name is revealed.

The main kids make a friend of new kid James Stone and show him all their little schemes, but soon regret that.

In the "Pee Wee Pals" program, the main kids each have to take care of a kindergartner during recess.

Gus winds up the new target of the school bully's wrath.

Substitute teacher Mr. E. captivates all the kids with his command of authority, except T.J.

Gus takes a new identity when he discovers that people think he's a different cool kid when he doesn't wear them. Too bad "Guy" can't see a thing.

The gang breaks up when they are forced to choose a best friend to write about.

The Ashleys jinx Gus according to the playground rules so that he can't talk until his friends say his name.

The gang tries to cover up Mikey's ripped pants so Finster won't catch him.

Miss Finster agrees to babysit Spinelli for the weekend while her parents are away.

Randal recruits the Tylers, the Ashleys' little brothers, to help him snitch.

King Bob orders the kids to build him a pyramid so that all future classes will remember him.

T.J. and Vince are so into the "Barnaby Boys" books that they dress up like the Barnaby Boys and try to solve the mystery of the suspicious substitute janitor, Earl Raymond.

Randall gets the main kids to pretend that they're his friends when his father, Leonard, visits the school on Randall's birthday.

Gretchen turns to former yo-yo champ Tommy Tate to learn how to master the yo-yo.

T.J. and the gang meet Mr. Dudicoff, a student teacher who was a legend at 3rd Street School back in the day.

Mikey wants to be exactly like Vince when Vince saves his life.

Spinelli gets peeved with her parents heap so much praise for Gretchen at her expense.

Bob installs Gus as a substitute king while he has a tonsilectomy, figuring Gus will be easy to control - but Gus turns into a despot instead.

Spinelli's parents put her in Mlle. Povlova's dance school, where she teams up with Mikey.

The kids stage a protest when Principal Prickly plans to tear down Ol' Rusty to replace it with a new jungle gym.

The kids dream about what the teachers' lounge must be like.

Randall accuses Spinelli of hitting him with a rock during a dirt clod war so the kids put her on trial.

Bad-guy Mundy becomes very poular after he prevents a ball from hitting a little kid.

T.J. takes charge when Gretchen seems to achieve a dream that T.J.'s always had, to be an astronaut on the space shuttle.

TJ receives an old history textbook with a treasure map that leads the gang, Randall, and the Ashleys out to get the treasure. But as they get closer, greed arises and the 4th graders fight for the treasure.

The kids, and Vince himself, come to the awful realization that Vince's once popular older brother Chad has grown up into a geek.

Jared, the new student, appears to be perfect, making the rest of the school very jealous.

The main kids discover that Gus was once a notorious dodgeball player who went by the name of El Diablo.

Vince feels like an outsider after he misses the must-see movie of the weekend.

Vince and T.J. compete for the job as A.V. Kid, but their competition leads to a broken-up friendship between them.

Spinelli gets a crush on a fifth grader and has to get over it to save her reputation.

The bad kids from The Girl was Trouble trick Gus into shoplifting candy from Kelso's.

Gus has to go to the Yard of No Return when he kicks a good kickball over the fence.

Gretchen and Vince both run for president.

The school gets a new technology system installed called the SAL 3000 which controls everything.

The Ashleys get back at Spinelli by entering her into the Kiddie Cosmetics Little Miss Blush Beauty Pageant. But her friends talk Spinelli into trying to beat the Ashleys in the pageant.

After Mikey helps Cornchip Girl off the climbing frame after she gets stuck, the gang wonder how big he will be. Gretchen and Galileo conduct a test to find out how big everyone will be when they are older, and Mikey's test says he will be 50 feet tall! The others find this cool and wonder what 50 foot Mikey could do, but Mikey isn't so sure that being 50 feet tall will be that great.

Menlo and Randall team up to manipulate the entire playground.

The bored main kids build their own fort. But then Lawson takes it over.

A career day assembly gets all the kids to decide their future careers. That is all except Spinelli.

Digger Dave quits digging and then bosses everyone around.

Fed up with Vince's ego, the kids bet Vince that he can't go one whole day without beating someone in a sport.

When the gang catches the mysterious ""Libray Kid"", they take her out to recess where she becomes obssessed with the playground.

Spinelli becomes popular as an advice giver when she sits in for Guru Kid.

Secretary of Schools Garrison chooses 3rd Street School as the place to test his program to bring test scores up by cancelling recess.

Gus and Theresa (Cornchip Girl) have a hard time becoming friends due to their rivaling fathers.

People start paying Gretchen for doing their homework so she can buy herself a new bike

Mikey is the only fourth grader who still believes in Santa Claus. He tries to convince the others Santa exists.

T.J. can't figure out why Gordy doesn't like him.

Mikey and Gus want to join the Woodchuck Scouts.

Vince completely loses his confidence at playing kickball when Ashley Q. beats him in a game.

On class picture day, the kids vow to keep Gus clean as he's never had a class picture of him taken.

Spinelli gets too attached to the lucky marble that Vince loans her.

T.J. has a mysterious new friend.

The kids warn Gus not to break the code by telling Miss Finster who started a food fight.

Spinelli channels her anger into a playground chalk drawing.

Ms. Grotke's strange behavior makes the kids think that she's a spy.

The kids want to find out who started a rumor that a boy knocked over Mikey's popcorn at the movies and Mikey then threw the boy into the girl's bathroom.

Randall becomes popular when he uses a joke book to make himself a standup comedian.

Disgusted by the horrible cafeteria food, Vince becomes the new school cook when the other kids try his cooking.

When a new kid from Norway comes to 3rd Street School, Gus befriends the kid by making him think that Gus is the hottest kid in the school.

In his hatred of Valentine's Day, T.J. sends a ""funny"" valentine to every single girl on the playground to show them how stupid Valentine's Day is, but his plan soon backfires when the girls mistake them for ""real"" valentine cards.

The kids come up with a plan to keep Gretchen from being transferred to Oppenheimer Elementary for the Incredibly Extremely Gifted.

Spinelli gets labelled a mama's girl when she inadvertantly calls Ms. Grotke ""Mama.""

Loneliness compels Randall to want to make friends with the other kids.

New kid Gus arrives at Third Street Elementary, but has to endure the indignities that a new kid must undergo.