How can high-quality arts programs attract and retain low-income urban tweens? Drawing on hundreds of interviews with young people, their families, leaders of exemplary programs and others nationwide, this report offers some answers, including 10 principles for developing effective programming. An infographic illustrating key findings, a report "knowledge-in-brief," a video introduction and video profiles of six outstanding arts organizations offer compelling supplemental reading and viewing. The following are appended: (1) About the Project Partners; (2) Qualitative Consumer Research Methodology; (3) Key Opinion Leader Interviewees; (4) Master Key Opinion Leader Interview Discussion Guides; (5) Case Study Selection Process and Organizations; and (6) Interviews with Multipurpose Youth-Serving Organizations.