The aim of this study was to investigate how a sense of justice, university identification and student engagement emerge within the educational context and the reciprocal relationships among these constructs. Two correlational studies were conducted: (1) a pilot study aimed at validating the constructs of justice (distributive, procedural, and interactional aspects), social identification and student engagement (rule-abiding and extra-role aspects), within the university context (N =\documentclass[12pt]{minimal}
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\begin{document}$$=$$\end{document} 280); (2) a study exploring the robustness of and the relationships between those constructs (N =\documentclass[12pt]{minimal}
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\begin{document}$$=$$\end{document} 429). The results confirmed the presence of a four-factor solution involving a sense of overall justice (comprising distributive, procedural and interactional aspects), social identification, and two types of student engagement (rule-abiding and extra-role behaviours). A sense of justice was found to be related to students’ rule-abiding behaviour and, at the same time, it was related to students’ extra-role behaviour, only for closely identified students. In other words, student identification with the university moderated the relationship between sense of justice and extra-role behaviours. Our results showed the important role of sense justice in promoting student engagement (in both aspects of rule-abiding and extra-role behaviour), providing useful insights for the management of the university level educational system towards a better involvement of students in the attainment of higher academic performances and institutional commitment.