The purpose of this report is to examine the significance of the teaching practice in elementary / middle schools in the United States by a group of Japanese graduate students. In Overseas Teaching Practicum held in schools in the State of North Carolina, the United States of America, for a week in September, 2009, the six Japanese graduate students majoring in education planned and gave lessons in some schools in America on Japanese society and culture in English. As a result, it was recognized that the teaching experiences in the international setting could contribute to the enhancement of the teaching skills, international understanding, understanding of home culture, and self-transformation of the participant students. Furthermore, considering the overall achievements of the projects during the past years, some commonalities were identified in the processes and focuses of their lesson planning/implementation, and the changes which took place during the project.