The master’s thesis Evaluation of the environmental quality of preschool institutions explores how various environmental factors affect the educational process and the development of children. By analyzing the responses of 129 participants who voluntarily took part in the research Evaluation of the environmental quality of preschool institutions of Istria county, the paper provides insight into the challenges faced by preschool institutions, such as lack of financial resources and the need for professional development of educational staff. The research is based on the analysis of responses from educators and principals and testing two hypotheses that dealt with the perception of safety and quality of the environment and the motivation of educators. The analysis of the obtained results also emphasizes the importance of natural environment, safety, inspiring materials, and functionality of space as significant factors in creating a quality environment. The first hypothesis confirmed the existence of a statistically significant positive correlation between the level of environmental equipment and educators’ perception of safety and quality, indicating that improving equipment leads to better perception of safety and quality. The second hypothesis revealed an even stronger correlation between the perception of environmental quality and educators’ motivation, suggesting that better working conditions can significantly influence educators’ motivation. The research results highlight the importance of a multidisciplinary approach in improving preschool institutions, which would combine knowledge from different areas to create an optimal environment for child development. The paper also emphasizes the need for continuous professional development of educators and strategies that will ensure optimal conditions for every child’s growth.