The original 1935 edition of The Rules of the Playground is discovered in the library.

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

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

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

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

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

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

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

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

Spinelli channels her anger into a playground chalk drawing.

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

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

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

Miss Finster hurts her leg and can't keep up with the kids during recess.

The kids find a paper fortune teller on the ground that predicts doom for Gus.

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.

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

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

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

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

Gretchen and Vince both run for president.

Scared of turning 10 on his soon-to-be bithday, Mikey develops an obssession of becoming a little kid again so he won't have to grow up.

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

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.

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