(In some cases, anyway.)

Which to me means that the biggest problem here is that, despite the lip service to “moral education” in Korean schools, stuff like racism doesn’t seem to be getting addressed in anything like a sufficient or reasonable way. There’s bigger issues within the system that probably work against that, like pressure to cram a lot of academic material into kids, and the infamously conservative social environment faced even by teachers who would want to innovate or reform the curriculum in these areas.