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Abstract: This research views class teaching as a dynamic system. A questio-nnaire scale was determined based upon widely collected material andexpert appraisal as well as a double process of factor analysis. Data forthis scale was acquired from 1, 937 junior middle school studentstaught by 62 teachers in mathematic classe. The result of the multi-fa-ctor statistical analysis showed the reliability of the five second-ordersubsystems and twenty-five psychological factors in class teaching pro-posed by the research made a breakthrough in the limitations of previousresearch work, explored the feasibility of quantification and predictionand strengthened objectivity in the appraisal of the quality of classteaching.

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