The Korean education system pushes their students hard like all education systems should. They usually make students work very hard and reach their true potential. This creates better educated students. Better educated students make up a well informed public. This will eventually lead to a large group of intelligent people equipped with the tools to solve all the problems they need to.
South Korea has an excellent education system because the country has a thriving tech industry with cars and computers. Obviously, the educational system in that country is pumping out scientists and engineers that drive their economy. The North Korean education system is completely different in that it keeps their populace isolated and afraid of the government.
Yes, the Korean educational system is a good one, because they prioritize the education for their children. The Korean system begins students learning math and education early. They work hard to make sure that the best people become teachers. They teach the students to become things that really matter, like engineers.
From what I have heard about the South Korean educational system it is indeed a good system compared to many other systems across the world. The students that take place in the education system in South Korea often have much higher scores when it comes to test compared to many other students.