Years of empirical research and practical reflection indicates organizing schoolsaround evidence-based instructional practices is an essential component of improving student achievement, or as Mike Schmoker quips, "Focus on Less,Then Obsess!" This session will guide administrators, coaches, and teacherleaders, in a hands-on practical exploration of how to use best evidence resources(e.g. Hattie's Meta-analyses, IES Practice Guides, Best Evidence Encyclopedia) to identify a very limited number of essential instructional tools or "Big Dogs",and engage the entire faculty in an on-going process of implementing, adaptingand refining their use across the grades and content areas.