In this study Endodontics group benefiting from opinion poll of university lecturers, student and graduates have evaluated their system of educational and their aim was to remodel and adjust educational system with the societys needs and promotion of the quality of such educations. The employed method was cross sectional and descriptive and analytical on the basis of 10 procedural steps and within 8 sections dealing with evaluated factors. Such as Scientific board members, management and organizational capability, students, manpower and logistic affairs, educational environments, research work centers, health and therapeutic sections, educational equipment, research equipment, laboratory and diagnosis centers, educational courses and programs, teaching and learning process as well as satisfaction expressed by students. The results of the research showed that general average of 8 investigating sections were %71.6 as a desirable research work. It is, therefore, concluded that function of the educational management is directly in line with evaluation process. Educational evaluation is the best indicator showing how much we should go to achieve certain aims, analyzes quality of the activity if such a system and by which we achieve logical and routine results. Key Words: Internal Evaluation, Department of Endodontics, Faculty of Dentistry; Tehran University of Medical Sciences.