In engineering graduate schools in Hokkaido University, internship programs are carried out as common courses. In the internship in some companies or institutions, students join some projects or training programs different from research works in their laboratories. Following the previous report on overseas internship, examples of domestic internship, long term project type internship and short term experience type internship, were reported in this article. Educational effects were also discussed based on the questionnaire survey. The results showed that understanding of the industries and self-awareness of being engineers were the most improved. Attitude to learn new things, ability to grasp and find problems, ability to apply knowledge to the practical problems, as well as challenging spirit and sense of teamwork, were also improved. From the data, domestic internship programs, long term or short term, have considerable educational effects, although the effect is the most marked in the overseas one.
