In actual practice, the requirements for conversion of any individual are determined by the Rabbi who sponsors the convert. Typically, Reform Rabbis require prospective converts to take a course of study in Judaism, such as an "Introduction to Judaism" course, to participate in worship at a synagogue, and to live as a Jew (however that is interpreted by the individual Rabbi) for a period of time. A period of one year is common, although individual Rabbis' requirements vary.