The aim of the study is to put forth the opinions of social studies teacher on the usage of Education Informatics Network (EIN). In accordance with this objective, 60 social studies teachers who work in secondary education institutions affiliated to Ministry of National Education in the various cities of Turkey form the sample group of the study. The volunteered teachers who attended the in-service trainings named "Teaching Methods and Techniques in Social Studies and EIN" which were held by Ministry of National Education form the sample group of the research. As data collection tool, "EIN Opinion Scale" which was developed by researchers and was composed of open-ended questions was used. The data obtained from the scale was analysed via conduct analysis method. According to the results of the study; it was found that most of the social studies teachers use EIN in order to provide document, they don't use EIN to upload content, they just use it to provide information only. It was also seen that they consider themselves inadequate on the subject of developing content and they don't use Content Management System mostly.