LAS VEGAS, NV - JANUARY 27: Singer Katy Perry arrives to celebrate the grand opening of 1 OAK Las Vegas and the GiveLove charity event at 1 OAK at the Mirage Hotel & Casino on January 27, 2012 in Las Vegas, Nevada. (Photo by Jeff Bottari/Getty Images)
LAKEWOOD - Katy Perry performed a concert at Lakewood High School Friday.
Perry sang at the school Friday because students won a contest with a video they created. The video set to the tune of Perry's hit single "Roar" features more than 2,000 students, some of them lip-syncing to the song.
The video is a one-shot take moving throughout the school showing different student clubs, cheerleaders and athletes.
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