Stroh appeared in '' High School Musical '' , '' High School Musical 2 '' and '' High School Musical 3 '' as smart girl Martha Cox , who secretly loved to " pop & lock & jam & break " . A professional dance instructor at the Thompson Lane Entertainment Center , her role in the franchise materialized when she took her students to the auditions herself . Along with her fellow cast for the movie , she appeared at the Teen Choice Awards to accept an honorary award charting the film 's instant success and at the American Music Awards of 2007 accepting the award for Favorite Album . Stroh also serves as co-host for the dance-along version of '' High School Musical 2 ''
American Music Awards of 2007
American Music Awards of 2007
Kaycee Stroh