This article contains mild spoilers. South Korea's notoriously high-pressure education system once again comes under the spotlight in the new tvN tiger-mom melodrama Green Mothers' Club. Lee Yo-won, Choo Ja-hyun, Kim Gyu-ri, Jang Hye-jin and Joo Min-kyung lead this series as mothers from different backgrounds to children in the same class in a school with a strong track record for.