Gus winds up working for the Hustler Kid to pay off a debt, and soon he himself becomes the biggest hustler in the playground.

The kids rope T.J. into a challenge to play a prank on King Bob before the end of the school day.

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

Everyone is segregrated once the Ashley’s start giving ratings to everyone on the playground.

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

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…

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…

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…

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

T.J. breaks his clavicle and now has to spend recess with the “”pale kids”” in Room 51.

T.J. shows up in school with a black eye. Everyone makes up wild stories about the heroic acts T.J. must have done to get the shiner.

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

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.

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

Every year the older kids pick kindergarteners to race in the Kindergarten Derby. This year an eager Tubby gets an unwilling Mikey to sponsor him in the race.

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

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

Someone else besides Gretchen is a math genius, and through math, Gretchen starts a close relationship with this person.

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

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…

Principal Prickly and Miss Finster plot to turn T.J. over to their own side by making him principal for a day.

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

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

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

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

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

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

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.

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

The kids take in a really ratty stray cat that they find near the dumpster, naming it Stuart.

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

Gretchen’s search for her stolen laptop leads her on a journey among the school’s delinquents that ultimately brings about her downfall.

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

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

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

A visit from Principal Prickly’s brother Paul leads to a challenge between 3rd Street and 98th Street kickball teams.

All the kids go on a big field trip to MISOOE (The Museum of Industry, Science, Oceanography, Oddities and Energy). But Ol’ Smokey, the beloved school bus, breaks down in…

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

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

Gus finds a tile from the game Ajimbo and soon the entire student body gets caught in its evil grasp.