"Girl-Centered Program Design: A Toolkit to Develop, Strengthen and Expand Adolescent Girls Programs" is a set of tools and guidelines for strengthening programs for adolescent girls in urban Kenya. Based on discussions from a 2010 meeting of the Kenya Adolescent Girls’ Brain Trust, hosted by the Binti Pamoja Center and the Population Council, the toolkit is written for those interested in working with adolescent girls ages 10–24. It can be used by anyone who is designing or running a program, writing a proposal to work with girls, or seeking innovative ideas on how to strengthen program activities. The toolkit has three main sections: the first focuses on structure, the second on content, and the third on monitoring and evaluation. Each chapter contains an introduction to the topic, examples from existing programs for girls, and practical, user-friendly tools.