Focusing on evidence-based practice (EBP) aligns with the school librarian's leadership role acknowledged by the American Association of School Librarians (AASL) in "Empowering Learners: Guidelines for School Library Programs" (2009) and in AASL's newly adopted mission statement. "The American Association of School Librarians empowers leaders to transform teaching and learning" (AASL 2014). Leadership through EBP is also a focus in the National Board for Professional Teaching Standards (NBPTS). Ross J. Todd explained that EBP "is fundamentally about professional practice being informed and guided by the best available evidence of what works" (2008, 17). Facilitating the availability of evidence are new technology tools and platforms that make student work more transparent and the collection, organization, and analysis of evidence richer and easier. One measure is the story of a library's impact on its school's learning culture. This article examines a variety of strategies for rethinking available local data and new schools that facilitate gathering, analysis, triangulation, and application in improving teaching and enhancing learning.