Clarissa learns a few lessons about responsibility when she becomes the editor in chief for her school newspaper.

Clarissa's plans for a slumber party are ruined when her parents go away and ask overbearing Aunt Mafalda to stay with the kids.

Clarissa becomes worried about her parents' marriage when a debate starts between the two of them. Marshall wants to follow his dream of building a brand new mall, while Janet is more concerned about saving the trees on the same piece of property.

An I.Q. test result has Ferguson believing that he is really a genius. His dreams of creating a model society come crashing down when he goes head-to-head with Clarissa on a game show called "Brain Drain".

Using her deductive powers, Clarissa determines that her parents are having a baby. She orchestrates a series of demonstrations to try to dissuade them, only to discover they're actually adding a new room on to the house.

Clarissa is determined not to wear the same old blue cardigan and knee socks for her school picture and devises a scheme to outfit herself in the coolest clothes around.

When a greedy bully forces Ferguson to hand over his big sister's walkman, Clarissa decides to stand up and fight. It's not her fists but her spirit that KO's the bully, and he winds up falling for Clarissa.

In an attempt to get around her mother's mandate that there be no TV in the Darling home for a whole week, Clarissa connects her computer terminal to the cable converter and nearly blows up the house.

In order to win a brand new car, Clarissa enters herself and Ferguson in a contest for siblings that have extraordinary relationships. When the editor for the magazine comes to interview the close siblings, it becomes a struggle for them to pretend to be friends.

Clarissa pitches in to help celebrate her parents' anniversary. Unfortunately a couple of things get in the way of the party-- her parents stop talking to each other, and Clarissa's cake nearly explodes.

When younger brother Ferguson displays her training bra in show and tell, Clarissa hatches a plan to send Ferg-face into outer space via helium balloons and a straight jacket.

When Marshall and Janet come down with the flu, it's up to Clarissa and Ferguson to take care of the household chores. But trouble ensues when Ferguson buys nothing but chocolate from the grocery store and a big snowstorm leaves them snowed in the house without any water or real food.

Clarissa gets a major crush on local weatherman Flip Fontana. But she's in for a big disappointment when she finally meets him.

When Clarissa is asked to play the part of a column in a pageant celebrating ancient Greece, she hatches a plan to get sick. The pageant turns out to be really cool, but it's too late-- Clarissa's plan has taken effect and she's grounded.

Clarissa has a history assignment: take something old, tired, and worn out, and reinvent it. So Clarissa tries to reinvent her mom.

When Olvia's brother wants to sell his motorcycle, Clarissa stores it in the garage and plans to later buy it. Her parents have always told her she couldn't get a car but they never mentioned a motorcycle...

Both Clarissa and Ferguson have issues when Janet starts teaching at their high school. Ferguson gets frustrated when she doesn't give him the grade he wants on an art project and Clarissa doesn't like having her mom be everywhere she goes.

Clarissa is chosen to represent her school at a poetry banquet after her computer helps her write a strange but well-loved poem.

After one bad date too many, Sam realizes that the perfect girl for him is Clarissa. They agree to go out on a date, but it turns into a disaster and they both decide they're better off as friends.

Ferguson's new friend, J. Elliot Fundsworth III is the founder of the Junior Yacht Club and Ferguson will do anything to join. However, trouble ensues when Ferguson realized that J. Elliot is really only interested in Clarissa.

Clarissa and Ferguson are left home for the night and try to scare each other with a huge war of spooky pranks. However, they both end up being scared out of their wits when someone tries to come inside the house.

In an effort to break free from the shackles of "kiddie" jobs like babysitting, Clarissa asks for permission to apply for a job at the Baxter Beach Carnival. Her parents say no, but Clarissa perseveres only to wind up running the day care center.

Clarissa learns a thing or two about money and responsibility when she lands several part-time jobs and tries to keep up with all of them.

After having an argument with Clarissa, Ferguson tries to get her back by giving her the Silent Treatment. Clarissa has to figure out how to get him to talk and break his silence. Meanwhile, Janet gets paranoid over being a juror at mobster Fishface Eddie's trial.

Clarissa tries to ruin Ferguson's new romance with Fiona by giving him lots of bad advice. But her plan backfires when numerous girls from school start to go crazy for him.

Sam's mom Debbie is back in town for the roller derby playoffs. But there's trouble in store when Clarissa invites Debbie to stay at her house. Debbie's a little too messy for the Darlings and the Darlings are just a little too neat for Debbie.

Clarissa gets stage fright when her music teacher picks her to play a flute solo at the school music recital. Suddenly she finds herself not being able to play her flute like usual and has to figure out how to get back in 'the zone.'

When Clarissa has to compete against winner Cindy Sparkle in the talent show, she turns to the journal of her great great aunt once removed hoping for some helpful show stopping hints.

After vowing to never babysit Elsie Soaperstein again, Clarissa lets herself get guilted into sitting for her on the Soaperstein's anniversay. Elsie's a big time troble maker with only one weakness- Ferguson.

After helping Sam to land a new girlfriend, Elise Quackenbush, Clarissa feels left out when Sam cancels his plans with her to spend more time with Elise.

After a commercial producer spots Marshall in line at the grocery store, she chooses him as 'the perfect face.' However, Marshall starts taking his new role as a male model a bit too seriously.

As Marshall's birthday arrives, he loses interest in everything and decides to sell the house and move the entire family to Mango Island. Everyone goes along with the idea until Marshall has a couple interested in buying come look at the house and they realize just how serious he is.