A method and system for generating performance data relating to the efficiency of an organization and including the steps of describing a plurality of performance variables associated with the organization. The performance variables describe measurable properties of the organization. The invention further maps each of the performance variables to a normalized performance variable mapping that has a neutral value and at least one inflection point of the performance variable within a normalized range of values. Each inflection point describes effects of the normalized performance variable in changing from a positive influence to a negative influence on the organization's efficiency. Then the invention assigns a weighting factor to each of the normalized performance variables to produce a plurality of weighted normalized performance variables. The method and system calculate the efficiency of the organization as a function of the plurality of weighted normalized performance variables. The method and system further include the use and maintenance of instruction tables for identifying interactions among the various performance variables.