Spencer Lacy, 18, Gordon Bowman, 18, Jake More, 18, Alex Gomez-Andrews, 18, Leo Skovron, 17, and Stephen Scowcroft, 17, use their weight to push themselves over the dam at Broadway on the Boulder Creek as they raft to their graduation ceremony at Boulder High School, Saturday, May 22, 2010. &lt;br /&gt;
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Kasia Broussalian&lt;br /&gt;
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For a video of the graduation ceremony, please visit  &lt;a href=&quot;http://www.dailycamera.com&quot;&gt;http://www.dailycamera.com&lt;/a&gt;