The purpose of this study was to construct the indicators for accrediting institutions for intern teachers in Taiwan. Based on the result of document analysis, literature review, four times of panel discussion, public hearings, expertise validity and questionnaire review separately, the researcher constructs eight domains and thirty-five indicators for research. Samples not only are composed of domains administrative personnel; teachers whom work in affiliated experimental elementary and secondary schools, but consisted of intern teachers. The total number is 563. The research uses descriptive statistics, t-test and one-way ANOVA to analyze the appropriation of these indicators. In terms of the result, the research found out that ¡§the ideas of educational practicum¡¨ and ¡§the plan of educational practicum¡¨ are the best appropriate domains. Moreover, the male participants think the domain of ¡§checking system of educational practicum¡¨ is more appropriate than female. The intern teachers think the domain of ¡§the plan of educational practicum¡¨ and ¡§administrative supports of educational practicum¡¨ are more appropriate than those who had already finished their educational practicum. Except the domain of ¡§the achievement of educational practicum¡¨, there are significant differences in other seven domains between different identities. And the indicators of quality of mentor have significant differences between different school types. Finally, based upon above conclusions, the researcher offers several related suggestions to the education authority, the institutions of intern teachers, the institutions of teacher education and future studies, hoping to improve the educational practicum.