High School Credit System Relaxes Attendance via Online Learning  조선일보Since the Ministry of Education introduced the high school credit system from the first semester of  매일경제Education Minister Faces Favoritism Claims Over Selective Teacher Group Invitations  조선일보Choi Gyo-jin says Korea to hire 7,100 secondary teachers next year to secure high school credit system – CHOSUNBIZ  Chosun BizEducation Ministry eases high school credit rules to reduce teacher workload – CHOSUNBIZ  Chosun Biz