This study reveals the challenges and successes of collaboration between refugee resettlement services and Head Start, and demonstrates that increasing the Head Start enrollment of young children in refugee families is possible through intersectoral collaboration. The authors conducted quantitative and qualitative research in two sites where refugee resettlement and Head Start programs were working together: Syracuse in Onondaga County, NY, and Phoenix in Maricopa County, AZ. Based on OHS county-level data, refugee enrollment in EHS/HS increased by 500 percent in Onondaga County and by 200 percent in Maricopa County over a six-year period (2008-13). Refugee EHS/HS enrollment increased more than would be expected based on refugee arrivals, which declined in both counties between 2009 and 2013. Total Head Start-funded enrollment remained relatively stable in both counties over the six years. (author abstract)