Study Protocol: Developing a Toolkit for Disseminating Digital Single-Session Interventions in Primary Care and Schools in Montana

Background. Nearly four million adolescents in rural U.S. lack adequate mental health care, highlighting the need for scalable, accessible solutions integrated into existing systems. Digital self-guided single-session interventions (SSIs) offer a promising solution with proven clinical efficacy, scalability, and low cost. However, widespread adoption depends on developing effective dissemination support systems. This protocol aims to develop a dissemination toolkit to implement Project YES – an evidence-based SSI platform – into primary care settings and schools across rural Montana. Methods. Using implementation science approaches and the Accelerated Create-to-Sustain Framework, we outline a six-step process involving advisory boards of primary care providers, schools, and parents of Montana youth. Activities include refining implementation strategies, developing actionable toolkit components, prototype creation, usability testing, and initial implementation planning. Discussion. This study will provide a practical, user-centered approach to developing a dissemination toolkit, supporting the effective integration of Project YES into rural care systems.