In this chapter, the authors report on a study that examined relations between social connectedness, school engagement, and achievement in minority (Roma) and majority youth in Albania, Bulgaria, Kosovo, and Romania. Based on a social connectedness model, they investigated the interplay of two connectedness domains (i.e., school and family) and their relations to school engagement and achievement. Participants were 1,063 adolescents who completed the Social Connectedness Scale on school engagement and average academic achievement. The authors found that social connectedness, especially school connectedness, was associated with school engagement while parental education was associated with school achievement. Implications are discussed in terms of how these findings are relevant to greater insight into the promotion of connectedness and the academic success of minority and majority youth across the countries under investigation.