" To Err Is Human: Building a Safer Health System" from the Institute of Medicine was issued in 1999. This report has led to an increase in social needs for quality assurance and improvement of medical care. Clinical education throughout the continuum of undergraduate, graduate, and continuing education for medical training must be reconstructed and developed to meet social needs of medical care. Medical institutions must explain to society what medical graduates can do for patients as an outcome of medical education. The quality of medical education can be guaranteed by proving it. In 2010, ECFMG noticed that " Only those who have graduated from a medical school certified with international standards will be eligible to apply for becoming a doctor in the United States after 2023". In order to realize the quality assurance of medical education, medical education in Japan also must change to outcome-based education (OBE) from the traditional process-based education. OBE is included in the evaluation standards (international standards) of WFME, which is an international certification organization responsible for quality assurance of medical education, and OBE has become a global standard that guarantees quality assurance of medical education. Japan Accreditation Council for Medical Education (JACME), which complies with WFME, has also adopted international standards based on OBE, and OBE has become the standard for medical education in Japan.