In this paper, the author points out that youth with mental disorders make up a significant subgroup of youth who appear in U.S. juvenile courts. And he notes that juvenile justice systems today are struggling to determine how best to respond to those youths' needs, both to safeguard their own welfare and to reduce re-offending and its consequences for the community. He examines research and clinical evidence that may help in shaping a public policy that addresses that question. (Contains 61 endnotes.)