Kook Hee studied law at College of Law, Seoul National University, one of the top law schools in Republic of Korea. Kook Hee pursued an LL.M and, posteriorly, a S.J.D at the Georgetown Law Center. She began those studies in 2006 and finished them in 2014. Currently, Kook Hee is a deputy director at Ministry of Strategy and Finance in Republic of Korea.

Kook Hee's SJD dissertation focused on the legislative proposal of maternal and parental leave and benefits system to realize gender equality in reconciling work and childcare. In doing so, Kook Hee was supervised by Professor Susan Deller Ross. During the period of her doctoral studies, Kook Hee worked at Korean Women’s Development Institute (2009), where she co-authored “How to Attract Highly Qualified Women to the Business Services Sector.”