The present study was carried out to design the educational quality evaluation model at Technical and Vocational University through a mixed-methods research (qualitative-quantitative). In the qualitative section, 20 experts of higher Education were selected by purposeful sampling method and then the semi-structured interviews were conducted with them. The interviews were analyzed by qualitative content analysis method The results were extracted in the form of educational quality evaluation model with 17 components and 63 sub-components. In the quantitative section, for the validation of the designed model, a questionnaire was designed based on the sub-components of this model. The validity of the questionnaire was confirmed by the experts and its reliability was calculated by Cronbach's alpha which turned out to be 95. 0. This questionnaire was presented to 233 professors, staff and managers of Technical and Vocational University as a statistical sample. The data collected through the questionnaire were analyzed by using factor analysis and AMOS software. Using factor analysis, the model designed indicated 11 components (teaching-learning process, purposes and structure, financial resources, educational program, professor, community support, graduates, management, quality of education, research, and administrative staff) and 55 sub-components. The value of indices (CMIN/DF=1. 80, RMSEA=0. 06, GFI=0. 95, AGFI=0. 95, NFI=0. 94, RFI=0. 94, and RMR=0. 04) indicated that this method has a good fit and this model can be used as a valid tool for evaluating the educational quality at Technical and Vocational University.