Since the publication of To Err is Human in 1999, medical schools around the worldhave been discussing ways to teach medical students about patient safety. To deepen the understanding of patient-safety curriculums used in the United States, Dr. Matthew Weinger, director of the San Diego Center for Patient Safety and a professor at the University of California, San Diego, School of Medicine (UCSD), was invited to participate in around-table discussion on “Patient Safety Curriculum for Medical Students” held at Yokohama City University. Althoughthere have been active discussions in journals and within medical school faculties, no discernable consensus has emerged in the United States, other than that patient safety should become part of the educational system. The patient-safety curriculum used at UCSD and the curriculums promoted by the Department of Veterans' Affairs National Center for Patient Safety are introduced.