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The authors consider readiness for learning as the basis of professional development, a component of professional culture, which determines the level of professional achievements of a specialist in modern society. Readiness for learning is studied in the paradigm of the system-genetic approach in psychology and is defined as an integral mental quality, the internal psychological basis of which is the structure of the individual qualities of a person that determine the success of training (qualities required for training). A conceptual model of the psychological structure of readiness for learning of students of pedagogical high school, consisting of five functional blocks qualities required for learning is worked out. The article presents the results of the research of the main indicators of the dynamics of students ' readiness for vocational training at high school. The empirical study was conducted on students of pedagogical University of different courses, the total group -80 people. It is established that in the process of professional training the indicators of quality required for learning development increase, their interrelations are improved, the psychological structure of readiness for training as a whole is optimized. The most significant development effect was noted in relation to quality required for learning: professional orientation, task acceptance, introduction skills, attention performance, arbitrary regulation of activity, empathy, verbal memory. The development of readiness for learning is an indicator of the development of professional culture of students in the process of studying at high school