updated 12/27/2013 AT 11:00 AM ET
•originally published 12/27/2013 AT 1:00 PM ET
Students at Canadian high school Ursuline College used the pop anthem in their uplifting video for a classmate. Tenth grader Sophia Vlasman, a member of the school’s basketball and cheerleading teams, was recently diagnosed with cancer.
To show their support for Vlasman’s fight, the student’s friends recruited the entire school to lip-sync along to Perry’s hit. The video’s winding tracking shot starts with a few of Vlasman’s friends, the group gradually growing until all of Ursuline College is rooting and roaring for Vlasman.
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