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It's the Start of Something New! Here's the Cast For the High School Musical TV Show
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Mark St. Cyr as Mr. Mazzara

Mark St. Cyr — who appeared in 2017's Marshall and guest-starred on Chicago P.D. and After After Party — plays Mr. Mazzara, the school's uptight STEM teacher who tends to butt heads with the idealistic Miss Jenn.

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