This article tests whether the form of decision-making used in school environments affects pupils’ views on the legitimacy of the decisions made, and of the decision-making procedure. Building on political science theory on democratic decision-making, it compares pupils’ reactions towards decisions made by pupil councils, by pupils via referendum, and by the teaching staff. The data come from a series of randomized scenario-style experiments in which participants (Swedish pupils involved in upper secondary education) were exposed to a questionnaire describing a decision-making situation. The results show that the form of decisionmaking used matters for pupils’ acceptance of the decision-making procedure, but not necessarily for their willingness to accept the outcome of decisions. Pupil referenda in particular were effective in creating procedural legitimacy.