This training is designed to enhance Substance Use Prevention Program (SUPP) providers’ ability and confidence in evaluating the fit of their Youth Prevention Education (YPE) curriculum with their specific audience. Participants will learn a structured process for assessing their curricula’s cultural, developmental, and contextual relevance, identifying adaptations that don’t compromise program fidelity, and making meaningful adaptations that enhance engagement and effectiveness. By the end of this training, participants will be equipped with practical strategies to tailor their YPE curriculum for diverse populations, ensuring a greater impact and more positive outcomes in substance use prevention efforts.