I think "death education" would be quite impactful as something taught in school and to teenagers (or even younger children). But I wonder if the emphasis on palliative care (which is generally associated with the very sick or elderly) is too narrow to truly encompass the deaths that teenagers regularly encounter. One approach would be, in your pilot study, to regularly have conversations with the students about where and how they encounter death in their everyday lives, and how it affects them. Stories about mass murders, hate crimes, and fatal accidents in the media come to mind, as well as stories about war casualties. Do we think about these deaths in the same way as we think about a grandparent slowly fading away? Should we? The broader philosophical questions about death-- especially for youth growing up in the United States-- should definitely be given due consideration and consciously discussed.