This classroom training will teach individuals about the five-minute Global Appraisal of Individual Needs Short Screener (GAIN-SS), and is primarily designed for the following three things. First, it serves as a screener in general populations to quickly and accurately identify clients who would be flagged as having one or more behavioral health disorders on the GAIN-I, suggesting the need for referral to some part of the behavioral health treatment system. It also rules out those who would not be identified as having behavioral health disorders. Second, it serves as an easy-to-use quality assurance tool across diverse field-assessment systems for staff with minimal training or direct supervision. Third, it serves as a periodic measure of change over time in behavioral health. It is designed for self- or staff-administration with paper and pen, on a computer, or on the web. It can be easily converted to a scannable form or incorporated into existing instrument batteries or systems.