I like this drama since it shows ugly reality of Korea educational system and third world mentality people in Korea. I was born and raised in Korea. I attended till high school. The school teacher’s big income was from the bribery money from student’s parents. Whenever I moved up the grade, new home teacher was required to visit all his/ her students’ homes for checking students’ home condition. But mainly the teachers were getting bribery money from the rich parents while they were visiting. My parents were poor and I was embarrassed and upset with the ugly systems. All I have is bad memories of ugly teachers behaviors. They favors the students from rich parents. I wonder if that ugly system is still existing.