It is now widely recognized that assessment and the feedback play key roles in the learning process. However, assessment-based learning approaches are not yet commonly practiced in Japan. This paper provides an example of an assessment-based approach to teaching and learning employed for a course entitled "English as an International Language" offered at the Nagoya University of Commerce and Business in Japan. The course objective was to help develop critical thinking, analytical reasoning, creative thinking, writing, and communication skills through examining the sociolinguistic landscape surrounding the English language in Japan. ICE (Idea-Connection-Extension) methodology was used to assess the course. Students actively engaged in the coursework and their feedback to the course was positive.