In 2014, California voters passed the Safe Neighborhoods and Schools Act, which was designed to shift the focus from housing and holding criminals towards prevention and support programs for K-12 schools. The California State Legislature established the Learning Communities for School Success Program (LCSSP) grant for the purpose of allocating funds to local education agencies to focus on improving student outcomes for the most underserved student populations. As a recipient of LCSSP grant funds, San Bernardino City Unified School District (SBCUSD) established a series of professional learning opportunities to build school capacity in the areas of school climate and culture and trauma-informed practices. The purpose of this study was to evaluate the impact that the first year of LCSPP grant-funded professional learning modules had on school site climate and culture and student sense of belonging. This program evaluation employed quantitative and qualitative approaches. Fifty-four School Climate and Culture Coaches (SC3s) representing different school sites participated in an online survey focused on their experiences receiving then sharing the learnings gained from grant funded training. Sixty-two Site Climate and Culture Team members representing 41 different school sites also participated in an online survey to provide information about their implementation of grant-funded mindset and practice trainings. Three School Climate and Culture Teams participated in focus group interviews to provide additional insight. Evaluation findings indicate that the LCSSP grant-funded mindsets and practices trainings were implemented at school sites to varying degrees. Evaluation results also revealed the work that School Climate and Culture Teams did at school sites was influential in improving overall school climate and culture as measured by the Panorama Student Survey, however, at a slower rate than was anticipated. Future evaluations should be conducted in closer proximity to the actual training and implementation year. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]