www.agbell.org -
There is the LOFT program (Leadership Opportunities for Teens)
http://www.agbell.org/DesktopDefault.aspx?p=Leadership_Opportunities_for_Teens
www.nad.org/youth-leadership-programs - Junior National Association of the Deaf
http://www.dtquest.com - Deaf Teen Quest. This is a Christian-based group for teens with camps and get togethers.
Don't forget all of the blogs and vlogs that teens are also posting...many deaf/hoh teens communicate through these technologies.