Ashley Tisdale Junior high: Ashley Tisdale was the most seasoned cast member to join the Wildcats class of 2008. Her resume includes stints on "7th Heaven," "Beverly Hills, 90210," "Boston Public," "Once and Again," "Charmed," "Malcolm in the Middle" and "Still Standing" -- to name just a few. And that's all before she landed a regular role as Maddie on "The Suite Life of Zack and Cody." High school: While not playing drama queen Sharpay in the "HSM" movies, she lent her voice to "Phineas and Ferb" and recorded her debut music album "Headstrong." Post grad: Up next, Tisdale will star in the alien invasion movie "They Came From Upstairs."
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