The article deals with the substantiation and practically verification of the processes of creation, receipt, processing and submission of information to the end consumer, namely, the methodological substantiation of the information support system for the educational quality management in the general educational institution. It is established that not only the knowledge of the external information content, which is necessary for the implementation of the cycle of the educational quality management in the educational institution, but also the sources of its receipt and creation is of great importance for the heads of the general educational institutions.