The present study aims to design and present a sustainable human resource management model with an approach to promoting meritocracy in the seven education districts of Mashhad. The research is of mixed type and the research strategy in the qualitative part is content analysis and in the quantitative part, it is a survey. The statistical sample in the qualitative stage was 16 university experts who were selected as the sample size using the saturation principle and the purposeful and judgmental sampling method. In the quantitative part, there were 1327 principals of all girls' and boys' schools in the seven education districts of Mashhad. The data collection method was in-depth and semi-structured interviews in the qualitative part and questionnaires in the quantitative part. Data analysis was performed using Max Quda software in the qualitative part and SPSS software and structural equations using AMOS in the quantitative part. The findings in the sustainable human resource management model with the approach of promoting meritocracy include 5 dimensions and 24 components, which include competency-based recruitment, improvement based on the development of sustainable human resources competency, human resource retention with a competency approach, sustainable and competency-based human resource performance evaluation, and a performance-based payment system. In the quantitative part, the results showed that the aforementioned model has the necessary validity. According to the results of the research, managers of the seven education districts of Mashhad can promote meritocracy in the organization through the development and strengthening of sustainable human resource management.