As the recent use of Social Networking Service (SNS) in educational settings advanced, feature of SNS should be considered on the system and class design. This paper introduces and reviews practical use of SNS in education, in order to suggest the application of the use of SNS in education settings; First, we explain three points of the use of SNS in educational settings; the significance, feature, and issues of communication design. Next, we review the educational use of SNS in formal class, informal community in class, and local area community. Lastly, we exposit the evaluation methods for the effect of SNS use on education.
