This project “Ethics, Social media and Teacher Education” has developed as a result of collaboration with Monash University in Australia. The aim of the study is to understand the role of ethics in student teachers' decisions of participation in social networking sites (SNS). Few, if any studies have investigated the role of ethical reasoning among student teachers and their participation in SNS. The Ministry of Education and Research encourage teachers to use SNS as part of education. The ethical or juridical aspects are not discussed in the political documents. Teachers have to make their own decisions concerning these questions. Opposite Australia, Norway has no ethical guideline for students or teachers. Data is collected from Norwegian pre-service teachers (n=375). The survey investigates professional interactions and behaviours and the relation to the amount of ethical training received to date. The results show that 93 % of the students have a SNS profile that is frequently used. Our study provides insight into ethical implications caused by social media for pre-service teachers. These results indicate that Norwegian student teachers are aware of and make decisions regarding ethical dilemmas, but questions concerning SNS are not discussed in teacher education.