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SNEAK PEAK: HIGH SCHOOL
MUSICAL 3: SENIOR YEAR

For their senior prom, the cast (including Zac Efron and Vanessa Hudgens, below) struggled to learn the waltz. So Zac, who's the stronger partner? "Vanessa. She can pick up steps in no time."

While the main cast is unlikely to return in future High School Musical films, "we'll all remain friends," says Efron (in a Bolly-wood-inspired number with Hudgens).

Sharpay vies with other seniors for a scholarship to the Juilliard School. "She doesn't want anybody standing in her way," says Ashley Tisdale (with Lucas Grabeel).

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"When Zac and Vanessa [rehearsing with director Kenny Ortega] got a crush on each other in the first movie, as filmmakers we were like, 'Isn't that cute? We hope they don't break up!'" says writer Peter Barsocchini. "Lo and behold, like the franchise, they've showed staying power."

"Knowing it's our last time together," says Corbin Bleu (with onscreen squeeze Monique Coleman), "we're making every moment of it."

BEHIND THE SCENES

"Kelsi has grown into a woman," says Olesya Rulin (in costume for a prom scene with Grabeel) of her character, who composes the seniors' spring musical. Also, "The choreography has stepped up a notch," says Rulin.

"We all could do this for a long time," says Hudgens (on-set with Efron). "But I guess every story has its ending." In HSM3 Gabriella (Hudgens) and Troy (Efron) grapple with their fate while she considers an acceptance to Stanford University.