The article describes the features of the study which associated with the organization of the experimental verification of pedagogical conditions of activity. Computer science training of future teachers to the implementation of control and evaluation activities of professional skills and competencies is characterized. The methodological system of structural components that provide targeted and gradual formation of professional readiness of the future teachers of computer science to the evaluation of educational achievements of a schoolchild is considered. The methodology of training of future teachers of computer science was analyzed. It was implemented on the basis of the content of the psychological and pedagogical disciplines, educational disciplines, and professional practices. It is highlighted that the content of all academic disciplines mediates the interaction of the teacher and students in the process of training and conditions of optimization of the educational process. The features of the developed methodological system is using in the process of formation of professional readiness to undertake monitoring and evaluation activities by the teacher, all the means of information and communication technologies (program-methodological complexes, audio and video recordings of pedagogical situations testing students’ knowledge in Informatics, computer with headphones and a microphone, a training platform for distance learning, testing software, etc.) which make it possible to deepen the motivation to focus and enhance interest in learning activities, to expand the possibilities of teaching information, to establish the necessary feedback in the learning process. Each component of the methodological system of formation of readiness of future teachers of computer science for the assessment of educational achievements of students has been functioning in close interrelation with all the other components. So methodological system of formation of readiness of future teachers of computer science for the control and assessment activity is realized on the basis of the content of psychological and pedagogical disciplines, academic disciplines, professional practices and pedagogical practice of students. The prospects of further researches are connected with the use, the sequencing of formation of readiness of future teachers of computer science to diagnosis was provided by the sequential mastery of content control and assessment activities of the future teachers, recess, concretization and generalization of knowledge and skills on the basis of presentation of academic disciplines.