“…The most use non-parametric techniques are two-stage DEA and value added DEA; and the most use parametric technique is stochastic frontier production function. (Hoxby, 2000;Grosskopf et al, 1997;Chakraborty et al, 2001;McCarty and Yaisawrang, 1993;Linna, 1998;Duncombe et al, 1997;Kirjavainen and Loikkanen, 1998;Noulas and Ketkar, 1998;Ruggiero and Vitaliano, 1999;Ruggiero, 2001;Saito and McIntosh, 2003;Bishop and Brand, 2003) The past studies recognize that inaccurate identification of production set, improper measure of inputs and outputs, and failure to account for simultaneity in inputs, outputs, and socioeconomic factors can seriously undermine the accuracy and reliability of efficiency estimates (Klien, 2007). This is because it is most likely that the efficiency and the economic performance of school districts are difficult to accurately assess unless the production function is correctly defined in terms of all measurable inputs and outputs.…”