This group report from the 97th International Training Course on the Effective Treatment of Drug Offenders and Juvenile Delinquents provides an analytical overview of the investigation, trial, sentencing, and disposition stages of drug offenses in the countries represented in the group. The report addresses the countries' drug laws designed to criminalize drug abuse, illicit drug trafficking, and the escalating trend in injurious drug- related behaviors. Additionally, the report focuses on the limitations viewed as constraints to the effective treatment of drug offenders in institutional and non-institutional settings; this assessment highlights the current situations as well as optional countermeasures and alternatives. Drawing on a contextual study, the group concluded that the global scope of drug use and abuse presents a situation that requires international cooperation in the fight against drug problems. Recommendations for effective drug treatment focus on treatment- offender matching, the promotion of non-institutional treatment, more stringent sentencing policies, the establishment of an aftercare network, and the use of specific facilities for the treatment of drug offenders in both institutional and non- institutional environments. Appended tables address commonly abused drugs and their effects, a comparative study of institutional and noninstitutional treatment of drug offenders, treatment programs for stimulants by correctional institutions in Japan, and a resolution on drug offenses and sanctions from a European conference. 5 references