South Korea's three SKY universities reported cheating connected with artificial intelligence during examinations. At Yonsei University, hundreds of undergraduates took an online midterm for a course about ChatGPT. A professor suspected dozens of using prohibited materials, including textbooks and computer programs. ChatGPT was one possible program. The university said 40 students admitted cheating, which does not establish that all 40 used ChatGPT. Seoul National University and Korea University separately said students had used AI tools on recent tests. The simultaneous cases unsettled institutions whose admissions carry weight in a country where an eight-hour entrance examination governs access to prestige. They also exposed uneven rules about permitted assistance.

An online examination tries to isolate performance inside a networked room. A student can keep the test in one window and consult a model, search engine, document, or messaging channel in another, leaving the instructor to reconstruct conduct from records. Detection software offers uncertain evidence, while blanket bans collide with courses that teach tools later used at work. Yonsei's episode prompted plans for a public hearing as universities considered discipline and clearer guidance. Each course must state which tools are permitted and what use must be disclosed. It must explain which records may be reviewed and how an accusation can be challenged. If continuous assistance cannot be separated from the test environment, the university must require an oral defense or redesign the examination.