Implemented in 1983, SI involves a short period of confinement during which young offenders convicted of less serious, nonviolent crimes are exposed to a demanding regimen of strict discipline, military-style drill and ceremony, physical exercise, and physical labor. Most SI programs operate within a conventional State prison, but with SI participants separated from regular inmates. The history of SI is documented, identifying all existing and planned programs, and describing the goals and political considerations that motivate program development decisions. Findings relating to interviews and on-site observations of SI programs in Oklahoma, Georgia, Mississippi, New York, Louisiana, South Carolina, and Florida are discussed. Advice on future program development and evaluation, based on policy analysis of all facets of this study is presented. 8 tables, appendix, and bibliography.