recently. Given the trend, this study investigated how the pattern of student mobility among
countries and the centrality of Korea in this network have changed for the past decade,
analyzing the data from UNESCO and OECD through social network analysis. The analysis
shows that density of the total network has constantly increased for the period, although
discrepancy between in- and out-degree centralities has been kept consistent. For Korea, on the
other hand, density of the ego network has decreased for the same period, with significant
change in discrepancy between in- and out-degree centralities as well as in- and out-eigenvector
centralities. Such difference implies that destination countries for study abroad have changed
little for the period, but students from more diverse countries have chosen Korea as a
destination. In addition, the analysis of the core-periphery model was conducted to examine the
flow of student mobility among regions, and found that the traditionally dominant flow to North
American and European countries as well as a few selected Asian countries is still remaining,
despite the overall increase of student mobility. In other words, student mobility among
countries and regions has been even more polarized despite the increase of the amount of
student mobility. Based on the findings, we suggested the policy direction for the
internationalization of higher education and the enhancement of academic competitiveness of
domestic universities. Also, the implications were discussed for the plausible educational
inequality resulted from the rapid increase of student mobility across the world.