How do you teach leadership in high school?

I was recently asked by a high school teacher about ideas for teaching leadership to teenagers (She heard about Making things happen, and is considering applying some of its content). They start in middle-school and the students are hand picked to continue throughout highschool:

Scott Berkun

Full Story: http://www.scottberkun.com/blog/2008/how-do-you-teach-leadership-in-high-school/