Several studies point out the link between sociability and academic results. In this paper, we highlight a phenomenon of asymmetry in the perception of friendship. This occurs when a student think he has more or less friends than he really has. We present an experimental method that allows us to analyze this question in relation with the academic performances of 15 groups of students. We show that students having a symmetric view of their friendship relations tend to have the better results. Furthermore, our study shows that the link between sociability and results improvement is stronger for lower grades (i.e younger students). [For the complete proceedings, see ED579395.]