Seoul National University, College of Law (LL.B.)
Seoul National University, Graduate School of Law (Salutatorian)
Seoul National University, Graduate School of Law Department (LL.M.)
Harvard Law School (LL.M.)
Yale Law School (Visiting Scholar)
Judge, Seoul Criminal District Court
Judge, Eastern Branch Court, Seoul District Court
Chief Judge, Youngdong Branch Court, Chungjoo District Court
Law Researcher, Supreme Court of Korea
Presiding Judge, Busan District Court
Professor, Judicial Research and Training Institute
Presiding Judge, Seoul Criminal District Court
Chief Librarian, Court Library
Presiding Judge, Seoul Civil District Court
Presiding Judge, Busan High Court
Head Professor, Judicial Research and Training Institute
Presiding Judge, Seoul High Court
Chief Judge, Chungjoo District Court
President, Seoul Administrative Court
President, Judicial Research and Training Institute
Member, National Election Commission
Member, Legislation Committee of Seoul Bar Association
Member, Committee for Research on the Evaluation of the Judicial System of Korean Bar Association