The purpose of the present research was to evaluate the quality of School Management Excellence Program (output and outcome) in girls’ high schools. The population of this survey included school principals, assistant principals, teachers and students selected from among girls’ high schools of Karaj city, district no. 4. 34 indicators and 7 criteria for gathering data regarding output and outcome were identified and classified. Based on the derived indicators, 3 questionnaires for students, teachers, principals and assistant principals were designed. Content validity of the questionnaires was reviewed and confirmed based on experts’ views, in the field of evaluation. To determine the reliability of the three of questionnaires Cronbach Alpha coefficient was used. The reliability coefficient had an acceptable rate (over 0. 85). Due to the limitation of population size, all principals and assistant principals (33 persons) were selected to participate in this research. Furthermore, 46 teachers and 636 students were selected from among successful, semi-successful and low successful schools by stratified random sampling method. Research findings indicated that the quality of implementing the program in output and outcome from the view point of principals, assistants, teachers and students have been reported partially undesirable. Finally, for the improvement of School Management Excellence some suggestions are proposed.