One of the most striking features of our century is its pluralistic character This situation is valid for both the west and the east. Although the west has mostly a Christian population, it is a fact that millions of people who have different faiths and cultures live in the same countries. Since 1960s, the states, schools, colleges and universities have had to take into account these social chances occurred in these societies. This religious and cultural pluralism have affected not only the style of life in those countries, but also the programs and curricula of the schools, for those who migrate to these countries not only brought themselves, but also brought their religious beliefs and cultural heritages. In such a situation, the pluralistic education has not remained just as a theory, but continued as a social problem. Upon these developments, some religious educators have begun to develop some pluralistic religious programs for the schools to live in peace and harmony. This article examines the definition, importance, necessity, and historical development of religious pluralism; the theological dimensions; some basic principles, some educational models of it such as the approach of social sciences and phenomenology and the future of religious pluralism