MELBOURNE, AU  [Tuesday Aug.17.2004]  /Mix103FM.com/ -- Avril Lavigne went back to high school yesterday.

Australia's Daily Telegraph newspaper reports that the 19-year-old singer-songwriter played to 500 students from Westfields Sports High School in Australia. The students attending the show won a radio competition to see Lavigne perform. The Canadian singer wowed the crowd as she played five songs in the school's gymnasium.

Lavigne warmed up for the gig by playing some basketball back stage. Then the Sk8ter Girl and a guitarist performed a set that included the hits "Complicated," "Don't Tell Me" and "My Happy Ending."

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