Agriculture Why targeting matters Examining the relationship between selection, participation and outcomes in farmer field school programmes February 2015 International Initiative for Impact Evaluation About 3ie The International Initiative for Impact Evaluation (3ie) is an international grant-making NGO promoting evidence-informed development policies and programmes. We are the global leader in funding and producing high-quality evidence of what works, how, why and at what cost. We believe that better and policy-relevant evidence will make development more effective and improve people's lives. 3ie Systematic Reviews 3ie-supported and in-house reviews examine available high-quality evidence on the effects of social and economic development interventions in low-and middle-income countries. 3ie-supported systematic reviews follow scientifically recognised review methods, and are peer-reviewed and quality assured according to internationally accepted standards. Each review is independently reviewed by a subject specialist and an expert in systematic review methodology. 3ie is providing leadership in demonstrating rigorous review methodologies, such as using theory-based designs, for combining different types of evidence suited to respond to the complex and dynamic contexts and challenges of development. About this review All content of Why targeting matters: examining the relationship between selection, participation and outcomes in farmer field school programmes, 3ie Systematic Review 11 is the sole responsibility of the authors and does not represent the opinions of 3ie, its donors or its Board of Commissioners. Any errors are the sole responsibility of the authors. The affiliations listed for this review