performance management has become one of the most effective incentive tools. The performance of school principals in the field of leadership has been less investigated. This research was conducted with the aim of Predicting the performance of school principals in leadership based on spiritual intelligence and spirituality at workplace with the mediation of organizational intelligence. The correlation research method was based on the structural equation model. The statistical population of the research was all the public and girls’ senior high schools’ principals of Tabriz (N=270). The sample size is 160 people based on the table of Krejcie and Morgan with stratified random sampling. Albrecht's organizational intelligence questionnaires, King's spiritual intelligence questionnaires, Milliman's spirituality at work, as well as the researcher-made questionnaire of school principals' performance in leadership were used to collect data. The psychometric properties of the questionnaires are valid and reliable. PLS software was used for data analysis. The results of the structural equation model showed (P<0.05): the ability to predict the leadership performance of principals based on spirituality at work and spiritual intelligence with the mediation of organizational intelligence at a high level (R2 = 0.85) and the ability to predict organizational intelligence based on spiritual intelligence was significant (Total effect = 0.86). There is a significant positive relationship between spiritual intelligence, spirituality at work and organizational intelligence with performance (P<0.05). Based on research results, promoting spiritual and organizational intelligence in principals, as well as promoting spirituality at work in schools can improve the leadership performance of principals
