I was a high school freshman when I realized the serious problems of (Korean) education system. The same unresolved issues continue to exist. Students take 10 classes a day and they are required to attend all of them.
Seniors in high school get an average of 4 hours of sleep and spend the remaining time of the day in school and studing on their own.
Most students are under tremendous amount of stress as a result of their overloaded schedules. Some commit suicide after getting disappointing grades.