Tess Foster wants to join the school wrestling team, against her wishes of her father, the gym teacher.
Tess invites her grandmother to stay with them to try to improve the boy's manners.
When Tess and Allie are invited to a prestigious party, Tess convinces the host to also invite her brother Sam.
Tess and Allie discover what true friendship is really about.
Tess feel guilty about a lie. The boys and their dog are all mad at Jack because he can't remember the parental passcode for the TV.
Tess reluctantly agrees to join the mathletes at school.
Tess tries to find a date for her father.
Allie and Tess accidentally send an embarrassing photo of Sam to everyone in school, there are concerns about the administration's new neighbor, and Jack has an eyesore.
Tess and her brothers find their Christmas plans wrecked when Jack announces that he wants them all to surprise Grandma for Christmas.
Jack decides to set up a private bathroom for Tess but would have to take a second job in order to pay for it.
When Kaylee says that girls on the wrestling team aren't attractive to boys, Tess decides to prove her wrong,
Tess is set to wrestle against last year's champion. Gabe borrows Jack's glasses to look cool at a party.
Tess is blown away to find out that Allie is going out with Bobby Parelli. When Tess tries to show Bobby all the differences between him and Allie, she gets an unexpected result.
It becomes increasingly difficult for Tess to keep her relationship with Bobby a secret from Allie.
Allie is angered that Tess spends so much time with Bobby.
After Tess breaks up with Bobby, Allie wants her to date someone else. Gabe has to pass a driving test.
When a fashion guru comes to Westfield, Tess tries to impress him by creating a contest-winning design that will get her all the way to New York.
Jack's heart is heavy when he sees how quickly his children are growing up. This makes it more difficult for Tess, who is trying not to make her 15th birthday feel like a child's birthday.
Tess intervenes when she discovers that Sam is smoking in an attempt to hang with some other students.
Jack starts dating Kaylee's mom and tells Tess to get along with Kaylee. After her efforts fail, Tess comes up with a plan to separate her dad and Kaylee's mom.
Tess and Sam are drifting into madness. Tess receives a scholarship to another school and says yes without hesitation.
Tess and Allie are looking forward to a school trip to Italy.
When acting girly to get a cute boy to ask her to dance fails, a mysterious witch makes Tess’s off-the-cuff wish to become a boy a reality, leading Tess to discover that being a member of the opposite gender isn’t easier most of the time. Meanwhile, Spencer said that he ate all the halloween candy so now he and Jack have to go trick or treating around the block to get candy.
Every year Jack tries to get the family to pose for the perfect holiday card photo and every year his plan fails. So when the kids disappoint him yet again by botching the photo shoot, Tess feels guilty and makes them all swear to stop fighting, as the ultimate Christmas gift for dad. The strain of bottling up their frustration leads to a big fight, and Spencer, afraid his misbehavior will land him on Santa’s naughty list, runs away from home. Tess tracks Spencer down at the mall, where the Santa imparts some pretty good wisdom, helping them all enjoy a better holiday season.
After Tess is alone on Valentines Day, she and Allie come up with the idea of "Girl-entines day".
Tess is determined to keep Jack on as her wrestling coach, even if it means helping him land the dreaded position of Vice Principal in charge of school discipline.
When the school district refuses to replace the wrestling team's dilapidated mats, Tess produces a video that changes their minds, only to discover that an allergy to the new mats makes them more dangerous to her than the old ones.
Allie, Jack and the boys search for a tape to help calm Tess down during exam week.
Tess's teacher is going on vacation and needs someone to look after his pet turtle, so he chooses Tess to look after it. As she does, she discovers the turtle is expecting to lay eggs!
