Susan A. Yoon is Associate Professor in the Teaching, Learning, and Leadership Division of the Graduate School of Education at the University of Pennsylvania, USA.Kira J. Baker-Doyle is Rosemary & Walter Blankley Associate Professor of Education and the Associate Chair of the School of Education at Arcadia University, USA.

"Networked by Design provides powerful evidence and numerous examples of creating social capital for continuous teacher learning. We come to understand and explore the complexities of teaching by organizing networks that are teacher-driven. At long last, Yoon and Baker-Doyle have shown us the keys to building trust among colleagues, creating community, and improving teaching, leadership and learning."—Ann Lieberman, Senior Scholar at Stanford University and Emeritus Professor at Teachers College, Columbia University, USA

• Introduction: From Understanding Teacher Social Networks to Interventions that Build Social Capital, Susan A. Yoon and Kira J. Baker-Doyle 1. Mechanisms that Couple Intentional Network Rewiring and Teacher Learning to Develop Teachers’ Social Capital for Implementing Computer-Supported Complex Systems Curricula, Susan A. Yoon 2.‘The Whole World Is Networked’: A Study of Connected Learning in Teacher Education, Kira J. Baker-Doyle, Latricia Whitfield & Katie Miller 3. Linked to Professional Development: Designing a Network Intervention to Strengthen Informal Networks in a Formal Program, Sara Van Waes, Nienke Moolenaar, Sven De Maeyer, Peter Van Petegem & Piet Van den Bossche 4. Structuring for Success: Building Instructional Capacity Through Social Capital at Allegheny Elementary, Elizabeth N. Farley-Ripple and Joan L. Buttram 5. Evolving Relationships of Pre-Service Teachers: A Cohort Based Model for Growing Instructional Practice Through Networks, Yi-Hwa Liou and Alan J. Daly 6. Sowing the Seeds of Change: Supporting Teachers to be Agents of Social Capital Development, Jodie Galosy, Nicole Gillespie and Eric R. Banilower 7. Open Source Culture as Inspiration for Design of Educator Learning Networks, Rafi Santo 8. Stimulating Teachers’ Learning in Networks: Awareness, Ability, and Appreciation, Femke Nijland, Daniël van Amersfoort, Bieke Schreurs and Maarten de Laat 9. Designing Educational Infrastructures for Improvement: Instructional Coaching and Professional Learning Communities, Megan Hopkins, James P. Spillane and Matthew Shirrell 10. Building Networks to Support Effective Use of Science Curriculum Materials in the Carbon TIME Project, William R. Penuel, Elizabeth de los Santos, Qinyun Lin, Stefanie Marshall, Charles W. Anderson and Kenneth A. Frank Conclusion: Toward Intentional Network Design: Applying What We Have Learned from Teachers’ Social Capital Interventions, Kira J. Baker-Doyle and Susan Yoon