He was in my third period Biology class in special programs. He had heart and lung problems. It is very difficult to explain the death of one so young to fellow students.
Death is common but never easy.
We had several students at my high school die in car accidents and one die while on a waiting list for bone marrow transplants. I think what the administration did was appropriate and helpful. Announcements were made over the PA and a moment of silence was observed. Students were told where they could go to talk to someone if they needed. Teachers also helped individually by holding discussions or moments of silence in class.