The goal of this research project is to conduct a pilot RCT of Text4Strength, an interactive automated text messaging extension of Sources of Strength (SoS), a universal school-based suicide prevention program that prepares diverse 'key opinion leaders' to conduct public health messaging and activities with peers to increase school-wide positive coping norms, communication with trusted adults, and seeking help for suicidal peers (Wyman et al., 2010). The investigators previously developed and field tested Text4Strength messages (RSRB#00047481 and 53924 closed) to demonstrate feasibility, safety, student engagement, and student-perceived relevance for a universal texting extension. The investigators will now conduct a pilot randomized controlled trial in one large school in Western New York that has implemented Sources of Strength for the past two years. The school will continue with Sources of Strength in the 2016-17 school, and add this school-wide texting component as part of this research study. Consistent with Leon's guidelines on pilot studies, the primary focus will be to identify areas of promise, success in reaching proximate targets, and the need for additional modifications (Leon, Davis, & Kraemer, 2011). Findings from this study will inform further refinement of the text messaging program and provide preliminary data for a larger efficacy trial.