Part 4

Alexa eases Katie's anxiety with an epic plan to crush senior year. Jennifer starts her new job, and Jack and Lucas help solve each other's problems.

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.

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.

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.

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

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?

Senior prom is on Saturday, and Katie needs a date. (See also: the courage to tell Alexa something important.) Lori and Joe go overboard at game night.

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?