The present short paper reports on the 6th overseas teaching practicum in the United States by six graduate students of Hiroshima University, Japan, partly organized by Hiroshima University Global Partnership School Center since 2007. The students majoring in elementary and secondary school education planned and conducted lessons in English in three local public schools in North Carolina. This project aims to achieve the following three goals: 1) to self-develop practical instructional competence by teaching pupils with different cultural backgrounds; 2) to enhance the abilities in developing teaching materials through hands-on teaching experiences in English; and 3) to acquire the abilities to design, implement and evaluate programs for promoting global partnership. In addition, the teaching experience was followed by cross-cultural study visits to Raleigh and Washington, D.C. Among the major achievements by the participants were enhanced awareness and skill of lesson planning/implementation and empowered classroom communication skills in English. It is hoped that this experience abroad will help to enhance the students' professional competence in teaching.