Kids with Cameras is a non-profit organization teaching photography to marginalized children in communities around the world. Heres the blub from their website http://kids-with-cameras.org/
"We use photography to capture the imaginations of children, to empower them, building confidence, self-esteem and hope. We share their vision and voices with the world through exhibitions, books, websites and film. We are committed to furthering their general education beyond photography either by linking with local organizations to provide scholarships or by developing our own schools with a focus on leadership and the arts".
If you are interested in academic research on participatory photography they also produce a great toolkit for practioners and educators with an extensive bibliography. http://www.kids-with-cameras.org/community/culturalagents-toolkit.pdf