Abstract
This research investigates whether Content and Language Integrated Learning (CLIL) was effective in deepening a group of students' understanding of the learning content and improving their language ability. The students were taught Japanese through CLIL on the theme of National Socialism, war and peace and their essays on these topics submitted before and after the classes are analysed. The comparison between the first and second essays show that their awareness of the importance of current issues and peace education is deepened by the review of past historical facts and their use of vocabulary is more complex in the second essays. As a conclusion, this investigation shows the effectiveness of CLIL and its potential in the future development of Japanese language education.
