This study, which examines the affiliates of three national youth organizations -- Boys & Girls Clubs of America, Girls Incorporated and YMCA of the USA -- is a first step toward defining the activities and experiences that contribute to youth development in such settings. The assessment found that in six of seven developmental areas (safety, challenging and interesting activities, sense of belonging, supportive relationships with adults, involvement in decision-making, and opportunities for leadership), the majority of youth at each organization are deriving positive developmental experiences from their participation. Further, the developmental benefits provided by these organizations seem to accrue to all youth -- regardless of poverty or risk profiles