High School Volunteer Programs

Over the past two years, I have seen Miami offer many programs for children with autism and other developmental delays that involved high school students volunteering and running camps including soccer and basketball.  It was great to see the high schoolers interaction with the kids, the interaction of the kids with each other and the amount of fun they had.  I would love to see programs like these in other counties.  If anyone has knowledge of any such program or how to get one started, please post.