In recent years, schools and education authorities world wide have been paying increasing attention to issues surrounding diversity and religious tolerance. The term 'tolerance' is, however, clouded by considerable confusion and vagueness. This article seeks to contribute to recent scholarly attempts at understanding tolerance and the term that denotes it. After a brief semantic analysis of the term 'tolerance', arguments concerning the onticity of tolerance as phenomenon or entity are discussed. By examining its onticity we explore and explain some of (...) the essential features of tolerance. The article ends with a brief discussion of some of the implications of our examination that we foresee for education. (shrink)