Nowadays pedagogical testing technology has become the basic tool for diagnosis and assessment of the level of students' mastery of learning material. Primarily they allow testing the acquired knowledge and skills in their use as a technology of the definite types of problems solution. Thus, the level of logical reasoning development plays a significant role in the successful mastery of many subjects (mathematical courses in particular). So, the problem of objective and measurable criteria for assessing the impact of the level of logical reasoning on the mastery of mathematical subjects is of current concern. We have studied the scientific sources that describe the testing technologies use for assessment of academic achievement as well as the level of logical reasoning development. We have found that the existing methods are based only on the individual work of the teacher with a student and don't suggest any diagnosing technology. The goal of our research is to prove the effectiveness of our method as compared to the traditional one.