Aiming to improve on existing research on after-school programs, RAND researchers evaluated the effect of the SFK program on a wide variety of behavioral outcomes. They found that SFK had positive effects on nearly every domain tested, and many of these effects persisted at 12-week follow-up. Notably, the effect sizes exceeded the average effect sizes found for other programs with like goals. This suggests that SFK is a successful program model. This study also provides the first causal link between spiritual development and resilience. (Contains 2 figures and 1 footnote.) [This research brief describes work documented in "An Outcome Evaluation of the Spirituality for Kids Program," by Nicole Maestas and Sarah Gaillot (ED501650).]