Abstract
The expert systems of control and knowledge estimation are usually developed on the basis of different approaches to constructing a question and answer on test.The analysis of existing testing methods made it possible to conclude that questions with selective and selectively constructed types of answer do not always allow objectively assessing the knowledge of trainees, which reduces the stimulating effect of pedagogical evaluation on cognitive activity of trainees, and the quality of the learning process as a whole.The article proposes a method of knowledge estimation, which is based on a new approach to constructing a question and answer that allows a freely designed form of a test response.The proposed approach gives an opportunity to expand the functions of tests, thereby increasing the approximation degree of the estimation for the test to the level of the real knowledge of students Keywords -The expert systems of control and knowledge estimation, testing methods, approaches to constructing a question and answer on test, quality of the learning process