Development Of An Instrument To Evaluate The Assessment Competences Of Science Teachers In Compulsory Education

The assessment competences of science teachers is an important part of science teachers' expertise,and it is also the focus in the current scientific education reform documents and teachers' professional development standards.Under the background of science curriculum and teaching reform,the connotation and orientation of classroom assessment have changed,so there is a new demand for the assessment competences of science teachers.To be competent for the present and future work,what kind of structure and characteristics of the assessment competences science teachers should have and how to diagnose the assessment competences of science teachers should be solved in this study.Based on the above two research questions,this study constructs a theoretical model to characterize the assessment competences of science teachers by grounded theory method and content analysis method,and then develop an Instrument to Evaluate the Assessment Competences of Science Teachers in Compulsory Education.The instrument is analyzed and revised based on empirical data.The above two tasks are mutually reinforcing and promoting,the construction of the theoretical model provides a theoretical basis for the development of the instrument.And the instrument can be used not only to diagnose the assessment competences of science teachers,but also to revise and verify the assessment competences model of science teachers constructed in this study.The theoretical research results show that the assessment competences model of science teacher constructed in this study consists three levels,a main thread,ten dimensions and twenty-three indicators.The four levels are assessment knowledge,assessment skills,self-reflection and assessment belief.The ten dimensions are: the criteria of assessment,the concepts of assessment,the design of assessment,assessment data,self-assessment and peer assessment,assessment methods,assessment of scientific inquiry,self-reflection and collaborative assessment with colleagues,ethics of assessment,each dimension contains 1 to 3 subordinate indicators.The results of model fitting test using structural equation model show that,this model can reflect the structure and characteristics of science teachers' assessment competences comprehensively.The results of empirical research show that,revised by structural equation model in three stages as "prediction-formal measurement-quality analysis",the aggregation,discrimination andd ifficulty of the final version meet the statistical requirements,the reliability of is 0.848,and the validity of the instrument is good both in structure and content.It can be used to diagnose the assessment competences of science teachers in compulsory education in China.