Hudgens co-stars in "High School Musical 3: Senior Year" with Zac Efron and Ashley Tisdale.
As for Efron's real-life high school experience, the heartthrob actor says: "I got really good grades. I'm not going to lie."
Tisdale, who did not belong to any clique and mingled with everyone, says she became friends with the popular kids before realizing "they are not that cool."
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