This document provides Drug Court staff with a concise and current overview of important issues relating to offender risk assessment and to provide a list of recommended contemporary risk instruments. Numerous risk scales are currently used in the United States to assess static risk factors and criminogenic needs, of which substance abuse is but one. This fact sheet identifies those risk scales best suited for use by Drug Courts. To do so, it used validity criteria widely accepted in the research literature on risk assessment. Those that met all the criteria are described under Recommended Risk Instruments, and those that met only some of the criteria are described under Promising Risk Instruments. These sections are preceded by a general discussion of the issues pertaining to risk assessment, as well as best practices for selecting an instrument to suit a particular Drug Court’s needs and capacity.