In modern ordinary schools, the most commonly used educational test is the classroom test compiled by individual teachers. This test is used to test all or part of the teaching of a subject. The test at the beginning of teaching is to judge the students' existing knowledge in order to arrange the teaching progress, commonly known as the "touch test"; The test in the teaching process is to check the progress and effect of teaching; The test at the end of teaching is to determine what students have learned from the subject content taught, thus reflecting the results of teaching work. The forms of test items include selection (including true and false, pairing, etc. ), free response (including short answers, fill in the blanks, argumentation and problem solving) and manual operation.