A self-report instrument was used to assess trends over time in student views of Developmental Assets in a rural Missouri county where youth report high rates of substance use. Based on 2012 survey results, a community/school-based prevention coalition provided intensive prevention education curricula integrated into the district's afterschool program as well targeted asset-building events following the Developmental Assets Framework. Results comparing asset scores between the three years failed to provide sufficient evidence supporting the effectiveness of asset-related education and events. However, the results provide health educators with valuable needs assessment data. Conducting a trends analysis based on a positive youth development process can assist community/school-based coalitions in planning future curricula, programs, activities, and events to address the specific asset needs of their community youth.