This book takes a serious historical and international look at the "digital pencil" movement to equip every student with a computing device with wireless connection. Using an ecological perspective as an overarching framework, and drawing on their own studies and available literature that illuminate the issues related to one-to-one computing, the authors present well-reasoned discussions about a set of complex and critical issue facing policy makers, educators, students, parents, and the general public. The Digital Pencil addresses four key questions: Is the digital pencil a good idea? The authors analyze the costs and benefits of one-to-one computing programs through consideration of multiple indicators and examine the evaluation reports of various projects within their analytical framework to present a comprehensive summary of outcomes of one-to-one computing projects. What happens when each child has a networked computer? The authors analyze existing data with the goal of gaining insights and making suggestions and recommendations for policy makers, teachers, and parents. What should schools purchase or lease - is there an ideal device? These authors examine the relative advantages and disadvantages of different devices and implementation schemes. How do we know if one-to-one computing is making a difference? The authors review the evaluation plans of the various projects and propose a framework for comprehensive evaluation and research on one-to-one computing. This book is intended for researchers, school administrators, educational technology professionals, and policy makers in the U.S. and around the world, and as a supplemental text for advanced courses in education, technology, and technological innovation.