A mixed methods investigation of implementation determinants for a school-based universal prevention intervention.

(MMH) which is widely adopted throughout Michigan, from the perspective of end users. This paper also utilizes the consolidated framework for implementation research and implementation outcomes framework to guide our understanding of implementing complex interventions and key barriers to implementation in schools. This research provides a foundation to design effective strategies that will balance curriculum fidelity and adaptation to achieve public health objectives. (3) What are the Implications for Practice, Research, or Policy? We need implementation strategies that guide flexibility and fidelity in EBI delivery in schools. While overall teachers felt the curriculum was adaptable and met student needs, they also mentioned specific instances when they would benefit from additional implementation support, such as making adaptations to meet the needs of trauma-exposed youth and keeping up-to-date with emerging drugs. Implementation strategies designed to address these challenges can improve fidelity and ultimately student well-being.