Analyzing data drawn from the Beijing Migrant Children Compulsory Education Survey (BMCCES), this study examines the impact of child, family and parent factors on migrant Chinese children’s performance in math. The central questions address the differences between the performance of migrant and non-migrant children in Beijing, the family and parent correlates of education achievement, such as household income and parent education, the impact of social capital based on family relations, norms and interactions, such as educational expectation and parental involvement, and how the results compare to findings in the US literature. The results show some similarities and differences between the family-related factors that impact achievement in the US and China.