Digital Daesung is a comprehensive education company providing content to elementary, middle and high school students as well as repeat exam-takers (N-sooseong), organized broadly into a high-school segment and an elementary/middle-school segment.
The high-school segment operates the college-entrance online lecture brand Daesung Mimac, subsidiary Igam which provides Korean-language mock exam content, and Gangnam Daesung QUETTA, a residential prep school network that includes a dedicated medical-school track.
The elementary/middle-school segment centers on Hanwoori Reading Education, described as the market share leader in domestic reading and essay education, together with franchise networks such as Daesung N-School and Dasuin.
The company built its current portfolio through 15 years of strategic M&A, including the 2010 merger with Daesung Mimac, the 2015 acquisition of Hanwoori, and the 2024 acquisition of the Gangnam Daesung residential medical-track school.
In May 2026, it fully divested its 50% stake in a Vietnamese joint venture with Ecopark, exiting its overseas international school business, and in the same month raised its stake in subsidiary Igam from 84.05% to 93.95%, strengthening control over a core affiliate.
Igam is described as holding competitive strength in the high-school Korean-language mock exam market, with its content adopted by roughly 900 academies nationwide.
On the competitive front, large education companies such as Megastudy compete in the online lecture and publishing markets, and a common industry observation is that demand is concentrating on leading brands even as the school-age population shrinks.