If you are considering entering Korea and being a part of the education system here, whether public or private, then please watch this video. Which I originally found out about through Kimchi Icecream.
It highlights the education "culture" and business here and how intense it all is.
Let me remind you that the children, the younger ones, do not really want to be bussed around and going to school at all hours of the day. I would bet even the teens, although may benefit their test scores, probably would rather be doing teen stuff than being stuck inside a classroom.
According to the video Korea's English ability is the worst amongst Asia.
Who is responsible? The students or the teachers?
Which leads me to my next point about this video. That there weren't too many foreigners pictured, I mean Foreign teachers. I think it would have been beneficial to get our opinions and experience listed within the context of English education in Korea.