Today, test technologies can be considered as an effective and standardized mechanism for diagnosing students' educational achievements, which optimally fits into the organizational process of educational classes. Tests make it possible to qualitatively measure the level of students' knowledge at each stage of their learning. At the same time, the necessary accuracy and objectivity of the inspection is ensured. The purpose of the article is to investigate the peculiarities of testing as a method of monitoring the educational achievements of students in physics and to summarize one's own experience of its use. The hypothesis of our research can be formulated as follows: the correct, reasonable and effective use of test control of knowledge during physics education enriches the educational process and prepares students for future life exams The article shows the essence of test technologies and their use in the educational process, substantiates the organizational and didactic conditions for their implementation in the study of physics. A complete system of test tasks in physics has been developed and put into practice, which contributes to increasing the objectivity of diagnosing the quality of students' knowledge and competencies. We believe that the correct, reasonable and effective use of knowledge test control during physics education enriches the educational process and prepares students for future life exams. We see further research in the implementation of test forms in the current educational process, in independent work and in a new generation of textbooks and manuals. Such large-scale use of the wide pedagogical possibilities of test forms allows us to achieve new results in improving the quality of education. With the transition to distance or blended learning, testing has become the main form of monitoring students' knowledge.