When I was in grade 12, my entire class went to a leadership camp day. We did team building and group exercises. I'm not sure what kind of leadership I did. The student council stayed behind for 2 or 3 more days to do more leadership training.
Now that I'm a camp director, I'm responsible for staffing a leadership camp of my own. For two weeks a summer, 16 teenagers learn to be leaders. They do team building, a canoe trip, and learn a lot about the style of leadership Jesus used.