Many social change organizations use tools to assess current performance; set priorities; plan new initiatives; test theories; build capacity; report accomplishments; engage stakeholders; achieve scale; and promote sustainability. This course will help participants to master the principles of tool development in order to create original tools that can be used to address recurrent organizational challenges. Students will critique existing tools, engage in theory-based tool development, create materials to support tool application (e.g., manuals or instructional videos); and develop plans for tool validation. The course will culminate with a tool expo for MPAs and other interested students.