The need to reduce public spending in the developing process and funding of public services has led to the introduction of performance indicators in the public institutions. Moreover, the need to optimize the educational activity, the implementation of an efficient management, insuring the quality and the compatibility of the educational systems has led to numerous investigations in this area by adopting, as a theoretical reference framework some organizational models to explain the functionality of the educational system and to define a performance appraisal system. Each model generated by default a certain philosophy regarding the evaluation methods of the institutional performance, design and use of the performance indicators on education institutions.