<Li> Mark Derwin as George Juergens </Li> <P> On February 23, 2010, it was announced that Bristol Palin would be making an appearance on the show . She would be playing herself at a music program for teen mothers on an episode to air on July 5, 2010 . On March 2, 2010, Bristol and Sarah Palin visited Los Angeles, where Bristol filmed her scenes for the episode that aired on July 5, 2010 on a closed set . </P> <P> On July 20, 2010, it was announced that Beverley Mitchell, best known for her role in 7th Heaven, will replace Mayim Bialik as the school counselor . </P> <P> Jared Kusnitz, best known for his role in the movie Prom, will be joining the cast as a reoccurring character named Toby . Toby is Ashley's "Study Buddy" from the Home - School group . </P>

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