This issue coincides with the 10th anniversary of the American Evaluation Association s (AEA s) Graduate Education Diversity Internship (GEDI) program. It emphasize core decisions and developments of the GEDI program and feature key participants who have participated in and contributed to the development and implementation of the program. Together, the chapters focus on: * Factors that contributed to the design and organization of the program * Critical components and aspects of the program that guide its implementation, characterized by the leadership training, mentorship and professional socialization, and the practical project placements * Lessons learned, which reveal the opportunities and challenges of expanding pipelines and pathways of diversity and social justice through professional associations. This is the 143rd issue in the New Directions for Evaluation series from Jossey-Bass. It is an official publication of the American Evaluation Association.