Understand what evaluation is first. Evaluation is an activity in which the subject judges the value of the object according to certain standards. The degree to which the object meets the needs of the subject is the value of the object to the subject. Educational evaluation is an activity that evaluators judge the degree to which educational activities meet the needs of society and the educated according to the educational goals and value standards determined by a certain society. To grasp this definition, we should focus on the following points: the basis of educational evaluation is educational objectives; The threshold of educational evaluation includes all educational activities and all personnel, institutions and programs related to educational activities; The essence of educational evaluation is value judgment; Educational evaluation should not only pay attention to social development, but also pay attention to the personal development needs of the educated.