Hyunjoon Park is Korea Foundation Professor of Sociology at the University of Pennsylvania. He received his Ph.D. in Sociology from the University of Wisconsin-Madison in 2005. Park is interested in educational stratification and family in cross-national comparative perspective, focusing on South Korea and other East Asian societies. He author of Re-Evaluating Education in Japan and Korea: De-mystifying Stereotypes (2013). He has recently studied causal effects of single-sex schools on educational outcomes in Korea as well as consequences of demographic and economic trends for education, well-being, and socioeconomic outcomes of children, adolescents, and young adult.