A hagwon is a private educational institution in South Korea that offers supplementary classes to students. These schools focus on various subjects, including English, math, and science, and are popular among parents seeking to enhance their children's academic performance. Hagwons operate outside the regular school system and often have flexible hours, allowing students to attend after their regular school day. Many students in South Korea attend hagwons to prepare for competitive exams, such as the CSAT (College Scholastic Ability Test). The intense competition in the education system has led to a thriving hagwon industry, with a wide range of options available for different age groups and subjects.