The purpose of this study is to suggest the solution of examining the problem of terminology and systematizing the terminology in relation to assertion and base in educational effective value. The assertion and base education is more emphasized with critical thinking ability and essay. However, the use of the terminology in relation to assertion and base is ambiguous and systemless in Korean education curriculum and text book, and it doesn`t show the difference in using lots of terminology in relation to assertion and base. So educational confusion is followed. Therefore, this study examined how the terminology related to assertion and base is used in educational way, tried to categorize it according to the characteristics in objectivity and subjectivity and tried to reveal the system of terminology clearly based on common point. The sense of examining and categorizing terminology seems to be reflected in present Korean curriculum. However, in real classroom, teachers and students can`t understand the differences and common points of terminology in relation to assertion and base and are confused by them. Therefore, examining and categorizing terminology need to be reflected on curriculum plan according to the level of school system. Some may think that the terminology which is used nowadays has differences. However, The suggestion of this study focuses on the common points and educational effective value of terminology. This kind of re-categorizing of educational terminology has an important meaning in educational effective value.