Reputation is considered an intangible asset that provides a competitive advantage in organizations, although in the field of education, its study and, specifically, its antecedents need further study. The aim of this paper is to analyze the effect of sustainability, innovation, perceived performance, service quality, work environment and good governance on reputation in private graduate online schools. This study is based on quantitative data collected from a survey. The sample consists of 349 students from a private graduate online school. The results obtained through PLS-SEM show that sustainability, service quality and good governance have a positive and significant influence on reputation. However, innovation, perceived performance and governance do not have a positive effect on the reputation of this type of organization. Therefore, more studies covering a greater sampling variety are required to determine the generalizability of these results. This study is a useful contribution since it will help managers of the private graduate online schools to know which aspects generate more reputation and, therefore, are the most valued by the public, so that the organization has a basis for decision-making.