TASC uses assessment, appropriate treatment, referral, and a structured course of monitoring combined with drug treatment. The intervention is designed to break the cycle of drug use, crime, arrest, prosecution, incarceration, release, and persistent drug abuse. This trainer's guide contains 12 modules designed for delivery to TASC and probation personnel. The first module introduces the course, followed by sections on TASC history and critical elements and means of establishing broad-based support of the criminal justice system and the treatment system. Other modules cover client identification and screening, assessment and referral, case management, urinalysis testing, recordkeeping and data collection, confidentiality, and special populations. Each module is accompanied by a timetable, list of materials, and overheads. 4 appendixes