Expulsion signifies the definitive removal of a student from an educational institution, usually due to serious breaches of rules, and is regulated by diverse legal systems worldwide. Scholars have investigated its consequences in various fields: Albert Mackey considered it as a form of discipline within fraternal groups, Samuel Johnson questioned its fairness as a penalty, and L.
Oppenheim scrutinized its legal foundation in international law. Jean-Jacques Rousseau associated it with civic status, while James Frazer tied it to ritualistic customs of exorcising evils. These viewpoints highlight expulsion's multifaceted nature as both a legal instrument and a social process, illustrating power relations and ethical evaluations across different settings.