Introduction. The system of the Russian education needs highquality education of future teachers. Future teachers should be familiar with age and psychophysiological features of children, be ready to changes, non-standard labour actions, and be able to make independent decisions and to take responsibility for them. It is possible to provide formation of such qualities among modern teachers only through successful social adaptation of young specialists.The aim of this article is to present the authors’ program directed on the assessment of degree of students’ adaptation to pedagogical activity in the system of professional socialization.Methodology and research methods. The leading methodological approach to the study of this problem is the personality-oriented approach that enables to develop the monitoring toolkit to reveal the formation of most important professional qualities of students. The methods of the analysis and synthesis of the scientific publications and directive documents on the discussed problem were applied. Questioning, testing, mathematical-statistical methods of processing of the monitoring results were used when designing and approbation of the authors’ program.Scientific novelty and results. The concept “professional socialization” is defined; the constructive nature of professional socialization of students of pedagogical high school is disclosed. Under the stage of the first-year students’ adaptation, students are considered as subjects who plan, organize, direct and correct own activities in the course of preparation for learning. The methodology for organization of monitoring of professional socialization of students of pedagogical university is described. The methodology described includes the following three components: ideological, operational, behavioral adaptation. The criteria of professional socialization efficiency are highlighted: motivational and evaluative, cognitive, emotional and volitional, creative-activity; the criteria characteristics and compliance indicators are given. The pilot testing on approbation of the authors’ methodology was carried out at the Chelyabinsk State Pedagogical University (today the Southern Ural State Humanitarian and Pedagogical University) in the period 2013–2016; the results of the work are presented in this publication.Practical significance. Developed diagnostic toolkit enables to assess on a timely basis the level of social adaptation of future teachers, to identify the ways of increasing the quality of vocational training. The materials of the research could be useful for specialists who are engaged in the process of students’ adaptation to university environment; for leaders and managers of educational institutions; for teachers, lecturers and students themselves.