Education is one of social institution that makes society and the country sustainable and development. With education, people acquire knowledge, skills, habit, value, and morality, and attitude . It provides the country workforce in order to meet the challenge of globalization of today competitive economic and technological development. Accordance with the needs above, each country try to build up quality of education, enlarge and widespread the educational building centers, schools and universities everywhere in the country. Moreover, they provide the chance to those who want to work on the educational sectors which aspect as private sector or organization. Additionally, the educational institution tries to reform and generate more method, structure or other techniques to improve the educational system. There are four functions of education: enculturation, qualification, allocation and legitimation (Historical Root Document) in which each function plays very important role and works in deferent aspect that education become more and more effective.In order to stabilize and develop the country more effectively, legitimation is one of the most important functions, which have been applying actively in education. In term of educational aspect, legitimation is the tool to establish and link the people in society. It provides norm, values and ideology to stabilize the political power and also cultural and social identity (Historical Root Document).Cambodia is one of the developing countries which has just emerged from the war that the education had been distracted to almost zero. According to Mr. Heng stated that “Having passed four years of the barbaric genocidal regime of the Pol Pot- Ieng Sary clique our infrastructure in the domain of education and teaching is completely shattered.” (Ayres, 2003). Now it has been struggling very hard to become the developed country by focusing much on the education as the main sector that education in term of legitimation has been applied more potentially in the Cambodian context in order to stabilize, nationalize the nation as a whole.