With this book, Nicole Augustine aims to close the gap in existing literature for the PS exam and enhance the prevention workforce so that society is better equipped to address current and future substance misuse challenges and improve long-term health outcomes for all. Divided into six domains, each module of this study guide contains a self-assessment, suggested readings, and a review of the information covered in the PS exam. A chapter covering the overall credentialing process and the additional requirement variations by the state is included. Substance prevention professionals around the world looking to become a credentialed professional will find this one-of-a-kind resource indispensable.