The purpose of this study is to explore senior high students' experience in history class. One high school class was investigated primarily by writing ”Gains from Learning in History Class”, and secondly by observation and informal interview. The result of this study is that senior high students' experience in history class was ”Teenagers' Historical Fantasy”. Students re-interpreted what the teacher taught with an unrestrained and vigorous style of fantastic thinking, and constructed their own history. Thus, teachers should consider the concepts of curriculum design and implementation from students' point of view.