It looks like trouble when the principal asks Arthur to take home a large envelope marked confidential.

Rumors about sightings of an alien space ship create excitement when Arthur's friends come to spend the night.

When Arthur fails to show up for his second piano lesson, his music teacher dismisses him. Now Arthur has to decide how much he wants to learn to play the piano.

An alphabetical listing of the acts of destruction committed by mischievous aardvarks on their animal classmates during a visit to school.

Aardvarks invade the Shop-All-Day Mall and turn it upside down with their wild back-to-school shopping spree.

When Buster defeats the Brain in a math contest, he is chosen for the school mathathon. Crushed, the Brain says he's decided to become a comedian and declares Buster the new brain.

When Arthur's third-grade class goes hunting for fossils at Rainbow Rock State Park, his friend Buster actually finds one, and instead of turning it in Buster decides to take it home--but he soon regrets his decision.

D.W., Arthur's little sister, tells all about what it is like to be in preschool, including essential information about such topics as bathroom breaks, storing things in a cubbie, and sharing at play time.

Arthur and his friends help Buster study for an important test so that he will be able to move on to the fourth grade with them.