Method for calculating test question distinction degree before examination

The invention discloses a method for calculating test question distinction degree before an examination, and belongs to the technical field of education evaluation. According to the method, intelligent indexes in a whole set of test questions are counted, then the intelligent indexes are used as an analysis basis to calculate an equivalent number of multiple iterations, and finally the equivalent number is substituted into a distinction degree calculation formula to obtain the distinction degree of the whole set of test questions. According to the method, after the whole set of test questions are combined, the distinction degree of the test questions can be calculated, and then whether the whole set of test questions meet the requirement of the selective test is evaluated. The distinction degree is calculated before the test questions are used for testing, so that the evaluation effect of the distinction degree on the test questions can be really exerted, and the operability of selectable test can be ensured.