To build the University Sustainability Index (USI), proposed in this article, a 7-step methodology was designed: Review of indicators (International, national and specific), Selection of indicators by means of the linear weighting method (Scoring), design of the requirements tree (proposed by Alarcon, 2005), panel of experts (according to the method proposed by Cyert and March, 1965), validation of the system (carried out using the Delphi method), distribution of weights using the AHP methodology and finally the construction value functions, to be able to homogenize the values and be able to aggregate them in a single measure, with which to make decisions at the strategic level of the organization, however, if decisions are required at the tactical and operational level, the value can be disaggregated into units of lower levels, which is proposed an index that covers the entire company. The proposed system allows comparisons to be made, and best practices to be analyzed, allowing acceptable values in indicators to be achieved at lower cost and more quickly.