School plays a key role in the development of a person's personality throughout their life. The educational atmosphere largely shapes behavior patterns, especially for children and adolescents. The foundations laid at an early age often become decisive for the further development of the personality. Today, approaches to the educational process have undergone significant changes. The article presents a methodology developed by the authors that allows assessing the quality of architectural spaces of educational institutions by four main parameters. This will allow obtaining an objective picture of the state of educational spaces and making adequate architectural and design decisions at the administrative level. This work is based on an integrated approach to assessing architectural space, developing universal assessment models that allow correlating different-quality characteristics of school subsystems into a single assessment system, which will allow obtaining a quantitative assessment of the state of spatial indicators of educational institutions. Methods for assessing architectural spaces of educational institutions suggest entering a new stage of designing specific schools, eliminating serious consequences of architectural and design errors with large budget losses when implementing poor-quality development scenarios. The priority task of reforming the system of public authority is to create a qualitatively new level of public administration efficiency, including in matters of spatial development of educational institutions and renovation of existing schools. Because of the study, the main criteria and indicators of the quality of the architectural educational space were developed. The matrix of criteria includes such evaluation blocks as safe environmental design; formation of space; inclusiveness; stages of the physical condition of the building. The evaluation criteria were tested and refined in schools of the Republic of Bashkortostan. The results of the project implementation are methodological tools for assessing the quality of architectural spaces of educational institutions, an application for assessing the initial level of quality of architectural space, modeling the architectural planning solution of an educational institution and estimate documentation at the stage of an application for major repairs.