USMagazine.com – High School Musical 3: Senior Year ruled the box office this weekend.

The Disney flick earned $42 million according to studio estimates.

It also set a record for the biggest debut for a musical, beating Mamma Mia!’s $27.8 million opening earlier this summer.

The musical – which stars Zac Efron, Vanessa Hudgens and Ashley Tisdale – also won the top opening of all time for a live-action G-rated movie, beating the $31.1 million that Hannah Montana and Miley Cyrus: Best of Both Worlds Concert earned earlier this year.

Horror movie Saw V opened in second place, with $30.5 million.

Coming in third was Mark Wahlberg’s Max Payne, with $7.6 million.

Beverly Hills Chihuahua and Pride and Glory rounded out the top five, with $6.9 million and $6.3 million in earnings respectively.