Application of IRT in the field of physical education learning achievement evaluation and its enlightenment to China's physical education examination for high school HE Yi，DONG Guo-yong
(School of Physical Education，Central China Normal University，Wuhan 430079，China) Abstract: This paper analyzes the application of IRT in PE metrics of American sports learning achievement evaluation system, and refines the performance characteristics of PE metrics evaluation system based on IRT. The research shows that the application of IRT in PE metrics is mainly reflected in the design of data collection based on test equivalence technology, parameter estimation by using multi-level Rasch model, and the establishment of test (item) database of physical education learning achievements through calibration and correction. With the support of IRT method and technology, PE metrics has the characteristics as follows: constant and uniform distribution of difficulty parameters of evaluation items and rubrics, communication of evaluation results with different sports items, accuracy of students' ability estimation, and dynamic and continuity of development of evaluation items. On this basis, this paper puts forward the corresponding measures to improve the evaluation system of China's physical education examination for high school, which mainly includes: widely introducing the "authenticity" sports skills evaluation content, breaking through the "exam oriented" shackles of physical education examination for high school; realizing the comparability of sports skills evaluation scores by using test equivalent technology; developing the test instruments with detailed parameters in order to improve the accuracy and differential degree for the scores of physical education examination for high school, and establishing a dynamic database of physical education examination programs (items) to constantly enrich and perfect the contents of the physical education examination. Key words: school physical education；physical education learning achievement evaluation；physical education examination for high school；item response theory