This study takes note of changes in school accountability policies from 2009 to 2015 in Korea utilizing OECD PISA data from 2006 to 2015. We found that active implementation of the accountability policy (2009-2012 period) were effective in raising the academic performance of students and schools...

This paper examines the effects of sorting and mixing on academic performance of high school students in South Korea. The Korean government has vigorously promoted mixing for more than three decades, replacing competitive entrance examinations at individual schools by a lottery-based enrollment...