All eight current high school Korean history textbooks describe the Jeju April 3 Incident with an average of over one page of content. – https://www.jejusori.net/news/articleView.html?idxno=435552

Maybe I just forgot, but one page is to hard to remember. I graduacted high school ~15 years ago.

I have edited my comment. The public should do pay attention. At least the government, politicians, or mass media should. The most famous thing from the island currently is its fruit. Thank you for sharing this link because it made me visit the article.

I am Korean living in Korea and this is a not well-known massacre even in Korea. I just heard the public does not pay attention to this though they should. (I am the one of public)