Paper presentation for Networked Learning Conference 2014. The presentation shows findings from an empirical study of five non-institutional Facebook groups created and managed by students in Danish upper secondary schools. The study rejects the claims that students do not wish to use Facebook for school-related activities. The empirical study demonstrates that students are using Facebook groups to help each other with all kinds of school-related matters, including issues relating directly to academic subjects. Based on the findings from the study, the paper concludes that there is an educational potential of Facebook groups in supporting peer-to-peer learning between students.