This article provides an overview of a grant project designed to create a district-wide elementary school counseling program with a strong data-based decision-making process. Project goals included building data literacy skills among school counselors and developing the infrastructure to efficiently collect important social-emotional indicators through a revised system for recording disciplinary infractions and a new research-based behavioral component for the district's standards-based report cards. This enhanced system for accessing and analyzing social-emotional indicators resulted in broad systemic changes in the district, including extending a number of grant initiatives to the middle and high school levels, restructuring data teams to adopt a multi-tiered system of supports, and establishing school counselors as leaders in data-driven discussions about student success.