Teen People

Pop Quiz: High School Musical Challenge!

You know the songs – but how well do you really know the stars? Test yourself!

  • Zac Efron costarred with which 90210 star on a short-lived TV show? | Zac Efron

CREDIT: Warner Bros. / Everett

Published: Friday October 10, 2008 06:00 AM EDT

Correct Answer: Lori Loughlin

In 2004, Efron landed a recurring role alongside 90210's Lori Loughlin (and singer Jesse McCartney) on the family show Summerland. Efron was eventually added as a series regular – but the show was soon canceled.