This paper discusses how to conduct collaborative classes between Japanese and international students in regional areas so as to make them more motivated in their foreign language competency and its related cultural understanding. Students in urban cities have lots of opportunities to encounter foreigners and international students or their own cultures because there is the fact that almost half of the international students go to universities in big cities like Tokyo and Osaka, while students in regional areas have less opportunities to directly meet such foreigners than the students in urban cities do. The authors have tried building such a similar opportunity for Japanese students to meet foreigners in regional areas by sharing the international students as human resources in each regional institutions so that they can communicate in their foreign languages. In this paper, the authors focus on extracurricular collaborative lesson camps among three regional institutions of technology.