Teacher's performance has significant influence on student's achievement. Few studies have sought to investigate the role of principal emotional intelligence on teacher job performance. This study examined the effects of principals' emotional intelligence on teacher performance by mediating the roles of organizational trust and professional learning communities. Results from a sample of 400 teachers and 100 principals in Iranian primary schools showed that all path coefficients from principals' emotional intelligence to organizational trust, professional learning community, and teacher performance were non-significant. Additionally, there were positive and significant relationships among organizational trust, professional learning community, and teacher performance.