The girls are finally graduating from high school and getting ready to leave home for college. But will they stay together or go their separate ways?

An expensive mistake means Katie can't afford to go to London. But she's keeping it a secret so she doesn't ruin Alexa's epic birthday party.

Alexa agrees to speak at Lori's carnival-themed Stand Up to Cancer fundraiser, where Katie's coffee kiosk brews unexpected jealousy.

With college applications looming, an aptitude test reveals Katie's true passion. But pursuing it is scary — and Alexa's "dream job" doesn't feel right.

Sophomore year is off to a good start for the girls until Katie twists her ankle. That gives Alexa something else to focus on while waiting to hear from her doctor.

Alexa's first high school dance is right around the corner. But a risky flu outbreak means she might not be able to go.

A big fight on the first day of school leaves the girls feeling way out of sync. Lucas starts college, and Lori and Dave toast their 20th anniversary.

It's New Year's Eve, and a bold new Katie is finally ready to confess her feelings for Ryan. Cue the fireworks -- and a flaming espresso machine!

Alexa's working overtime to keep Christmas on track. But finding her old hospital bag stirs up memories that throw her off her holiday game.

After dating Joe for six months, Jennifer's ready for him to meet her family and friends. It's just dinner ... but Katie's got some concerns.

Alexa's full of advice after getting her driver's license — but she doesn't know everything. Meanwhile at Wired, the new hire is Katie's worst nightmare.

College acceptance letters are here. But did Alexa and Katie get into the same school? And why are things suddenly so weird between Alexa and Spencer?

There's a rumor going around school that someone in the class has cancer. Katie tries out for the basketball team, and Lori starts working from home.

Katie and Ryan don't feel the same way about each other anymore, but neither has the heart to say it. Alexa's determined to pass her driver's test.

Alexa's excited to see Dylan again but senses Spencer needs her more. Katie organizes a food drive, and Dave goes overboard on holiday decorating.

Now that Alexa's secret is out, everyone's being unbearably nice -- even Gwenny. Jennifer and Jack invite themselves over to watch the World Series.

Alexa goes out of her way to prove she can't be punished. Jennifer surprises Jack with a backyard campout but has a hard time getting him to unplug.

Alexa takes Katie miniature golfing to get her mind off the SATs. Lori plays matchmaker when Jennifer hires a handsome handyman.

After landing the lead in the school play, Katie's left wondering whether she actually earned it. Jennifer asks Lucas to baby-sit.

Alexa gets the doctor's OK to play basketball but struggles on the court. A heart-to-heart with another young cancer patient reminds her of how far she has come.

The girls come up with a colorful solution to keep Alexa's diagnosis under wraps. But Dave's having trouble adjusting to his daughter's new look.

Katie aims high to win a community theater competition, putting unnecessary pressure on her friends -- and herself. Lucas reexamines his future.

Katie is thrilled when chosen to study acting in London. But the $2,000 tuition is way out of her financial range. So she takes on a series of odd jobs trying to come up with the money to send her to the UK.

To kiss or not to kiss? Katie's new life as a thespian has Alexa feeling a little left out. Jennifer accuses Lori of stealing her thunder.