The fundamental purpose of placement examination is to divide classes into groups. The placement test involves a narrow range and is less difficult. ?

Formative test is designed for a certain teaching unit and implemented in the teaching process. Its purpose is not to evaluate students, but to standardize teaching. ?

Diagnostic tests can reflect common mistakes in learning, diagnose learning difficulties, and especially find the reasons for the difficulties. The purpose of the diagnostic test is to find problems, and the score is not regarded as the official score. ?

Summative test is used to summarize and analyze students' learning situation in stages. At the end of a paragraph or class, the teacher will compile a set of test questions to comprehensively examine the students' mastery. At present, the subject examinations in primary schools are mostly in the form of closed books, and sometimes students are required to complete practical questions.

Formative test is an evaluation of students' learning process and results in order to improve and perfect teaching activities in the teaching process. It is designed for a teaching unit, and its purpose is not to evaluate students, but to provide a feedback for teachers, so as to facilitate teachers to standardize teaching.

The fundamental purpose of placement test is to divide students into classes and groups after having a certain understanding of their situation. Therefore, the placement test does not need to set some difficult questions to test students' ability, but is closely related to the administration of the school. Therefore, the scope of this test is relatively narrow and the difficulty is relatively low.

Summative test is used to summarize and analyze students' learning situation in stages. At the end of a paragraph or class, the teacher will compile a set of test questions to comprehensively examine the students' mastery. The real purpose of this test is not to identify students, but to let teachers know about students' situation and provide reference for teachers in the next stage of teaching.