"Internationalization" is a catch word in every field in Japan now. The wave of internationalization is coming towards high school education, too. This article examines first the degree of our students' interest in intercultural understanding. Next the process of law amendment towards the present situation will be mentioned where students are able to leave Japan and study abroad more easily. Then, including the influence of this amendment, the number of high school students who have studied abroad, their motivations and objectives to do so, their contributions to intercultural understanding and to English teaching and so on will be reported upon through the results of a survey I conducted in high schools in Ehime Prefecture..