1, qualitative evaluation and quantitative evaluation are the needs of qualitative and quantitative comprehensive evaluation. Qualitative evaluation refers to the value judgment of making a qualitative conclusion directly to the evaluation object according to the evaluator's observation and analysis of the evaluation object's usual performance, realistic state or literature without using mathematical methods; Quantitative evaluation is to collect and summarize data by mathematical methods, and make a value judgment of quantitative results for the evaluation object. Qualitative evaluation of quality and quantitative evaluation of weight.
2. It objectively describes the needs of the assessed object. The educational phenomenon is complex, with not only quantifiable contents, but also many unmeasurable contents. Evaluators need to explain the quantitative results according to the actual situation.
3. The combination of qualitative and quantitative methods can make an accurate, rapid, convenient and practical evaluation of educational phenomena.