The research aims to develop a measurement tool with validity and reliability for measuring loss of power (entropy) in schools. The study group of the research consists of a total of 596 teachers working in 15 public schools in Van Province in the 2023-2024 academic year. As a result of the application of Exploratory Factor Analysis (EFA) to 381 teachers to ensure construct validity, a scale with 26 items and four factors, 1. People-oriented work environment and parents, 2. Energy use and environment, 3. Technology, 4. Achievement of goals and supervision--was created. The total variance rate of the scale was obtained as 63.29%. The factor load values of the items in the scale are between 509 and 829. It was also confirmed by confirmatory factor analysis (CFA) that the scale measures a four-factor structure. In addition, a 26-question scale was studied with a study group consisting of 215 teachers in the confirmatory factor analysis. According to the answers of the study group, the Cronbach Alpha internal consistency coefficient and item total correlations were analyzed. While Cronbach Alpha values were found to be 93, 95, 88, and 92 for each factor and 97 for the whole scale, the lowest value among the item total correlations of the items in the factors was 535, and the highest value was 832. The scale created in the study will be applicable and functional as a valid and reliable measurement tool for schools and valid for other educational organizations and as an Entropy Scale with the results of the validity and reliability analysis carried out and applied.