The article is devoted to the results of the pedagogical experiment, checking the effectiveness of the Optional course "Formation of preparedness of future managers of general educational establishments to use innovative pedagogical technologies in professional activities". Quantitative and qualitative indicators of the data obtained during the study showed a positive impact of the proposed optional course on the formation of preparedness of future managers of general educational establishments to use innovative pedagogical technologies in professional activities. The article highlights the results of a study conducted among students of the second level of higher education, specialty 073 "Management", educational program "Management of the educational institution". The study used a questionnaire to determine the level of knowledge about innovative pedagogical technologies of future managers of general educational establishments (author’s development), a questionnaire to study the abilities of the individual to creative self-development (I. V. Nikishyn) and a questionnaire to determine the motivation of vocational training V. G. Katasheva. The generalized dynamics of levels of preparedness of future managers of general educational establishments to use innovative pedagogical technologies in professional activities before and after formative experiment in the form of diagrams is presented. In order to assess the statistical significance of the dynamics of changes in the levels of preparedness of future managers of general educational establishments to use innovative pedagogical technologies in professional activities and to assess the differences between the indicators of control and experimental groups as a results of experimental work, the methods of mathematical statistics was used – Pearson criterion χ2 ("chi-square test").