Jason Earles has been secretly working behind the scenes of 'High School Musical

Hannah Montana star Jason Earles has been secretly working behind the scenes of 'High School Musical

Disney star Jason Earles guest stars in "High School Musical

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However, the "Hannah Montana" star has been involved as a mentor to the cast since season one.

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Julia Lester noted the irony that the cast's "camp counselor" is now playing a camp director.

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Lester, who plays lead character Ashlyn, revealed to Insider that the actor has been working as a mentor

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Lester said. "Since season one, we've called him camp counselor as a joke.

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Earles, best known for his role as Miley Cyrus' brother Jackson Stewart in the 2000s "Hannah Montana" series, makes an appearance as camp director Dewey Wood

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