Some stats on Korean education from the OECD.

While looking for something else I came across this (.pdf file) Education at a Glance: OECD Briefing Note for South Korea, which has lots of interesting bits of information. For example, Korean public school class sizes are the largest in the OECD, and its teachers earn well above the OECD average:

Korea provides comparatively high teacher salaries with steep increases for more experienced teachers. At USD 52 666 for a primary school teacher with minimum training and 15 years of experience, Korea comes 2nd among OECD countries, while salaries at the top of the scale reach 84 263 USD, second only to Luxembourg.