This symposium presents three papers based on the mixed-methods evaluation of the five-year initiative. The symposium will share results of an RCT used to evaluate the quantitative outcomes for children and families in regard to length of out-of-home placements and exit status, based on 270 families enrolled in the study. In addition, the results of qualitative methods will be explored that draws on the perspectives of child welfare staff, housing services staff, and clients engaged in services. Collectively, these methods show that while lengths of stay were not reduced, there was an important difference in exit status by race, such that African-American children were more likely to be reunified when their families were engaged in the new intervention. The qualitative methods surface the important role of client advocacy in empowering these families to continue pursuing reunification despite contextual challenges. The symposium will also highlight how the process of research and learning is undertaken in a Pay For Success environment involving investors and a predetermined primary outcome metric.