This report is a case study of the "A Good Start: Scaling-Up Access to Quality Services for Young Roma Children" (AGS). The AGS was explicitly developed as a pilot project, giving local partner organizations across the 16 localities in Slovakia, Hungary, Romania, and FYR Macedonia the flexibility to design and pilot a variety of different approaches to promoting better access to early childhood education and care services. More than 1,000 families with more than 1,600 children of pre-school age were reached by the project as 'recurring beneficiaries', referring to those who either participated in AGS activities for an extended period of time, or who participated in several AGS activities during the lifespan of the project. This case study complements a wealth of international experiences on ECD interventions regarding the integration of most vulnerable communities/minorities, including some developed by REF itself based on the AGS experience. The Annex provides some examples, including references to the other AGS case study materials produced by REF in collaboration with AGS partners. This AGS case study also complements the companion report "Toward an Equal Start: Closing the Early Learning Gap for Roma Children in Eastern Europe" (World Bank, 2012), which finds that the inequities start early. (author abstract)