The assessment framework of any edcational program is used not only as evaluation criteria of the program but as a guideline for development and implementation of the program. The aims of this paper are to develop and apply thoretical backgrounds and practical plans for the preparation of assessment framework of science education subjects in science teacher education program. The backgrounds, basic direction and practical methods of the study are described in introduction, and the natune and structure of science teachers competency, which forms the foundation of assessment framework for science teacher education, are discussed in section II. Current status of science education program m. the science education departments of the Colleges of Education is outlined in section III, and precise description of development pIans fat the assessment framework is described in section IV. Finally conclution and suggestions are presented, follow by a model assessment framework and syllabus for science education subjects prepared by applying the theory and plans developed in this study.The model assessment syllabus modified by workshops of science teacher educatorts is shown in the appendix.