Air and Correspondence High School
The Air and Correspondence High school (ACHS) was established in 1974 in South Korea. The primary purpose of ACHS is to provide secondary education to people who are under-privileged for economic or personal reasons. Since 2009, 40 ACHSs have been affiliated with public schools in Seoul and Pusan. The ACHS offers an effective learning program blended with Internet and offline classes (2 times per month), various learning tools and differentiated educational methods. The ACHS reflects a new paradigm for 21st century education.