This study aims to evaluate the results of the supervisor delegation and operational performance evaluation system at the Faculty of Engineering, Kamphaeng Saen. Data used for an assessment is obtained from a survey using a questionnaire from a sample of 70 supporting staff, with a 94 percent reliability. The assessment approach applies ordinal logistic regression analysis to investigate the criteria that influence delegation and performance evaluation satisfaction. Moreover, the preference selection index is utilized to generate the criterion weight, which is a metric for generating the overall score used for the system's yearly evaluation. The findings of this study indicated four criteria that are more than 88 percent statistically significant as a supporting component of increasing the level of satisfaction: 1) the existence of metrics for assignments and performance assessments that may be utilized to analyze organizational outcomes and goals 2) the fairness of assignments and performance appraisals 3) assignments and performance evaluations based on performance assessments, and 4) providing chances for staff to participate in the establishment of operational goals, with the exception of the criteria in items 3) and 4) that have a statistically significant at 95 percent. The findings of establishing the weight of the factors utilized in determining delegation and operational performance evaluation are discovered to be fairly compatible with the influence value as a result of the ordinal logistic regression analysis. The highest weight is given to the ability for workers to participate in the establishment of operational goals, as well as the fairness of assignments and performance appraisals.