The authors' overlay of high impact strategies with the seven strategies of assessment for learning acts as a guide for teachers and leaders to maintain focus for professional development and high impact classroom practices. The book also provides an updated set of examples that explain the seven strategies: clear learning targets and models of strong and weak student work (where am I going?); descriptive feedback and self-assessment and goal setting (where am I now?); and diagnosing learning needs and matching with high impact strategies, focused practice with feedback, and self-reflection and tracking progress (what are my next steps?). Finally, the book presents organizing structures based on the most recent aggregations of empirical evidence (Hattie, 2009; 2012) so that teachers and leaders can make informed choices for areas of emphasis and focus.