Objective The major goal of this research is to look into and analyze the elements that impact private high school teachers' organizational commitment in Pematangsiantar City. Methods: A quantitative approach-oriented research strategy is used in this study. For the collection of research data through the use of documentation equipment and the distribution of online questionnaires. The study employed a sample of 110 people to conduct the research. The purposive sampling formula is used to determine the sample, which is directed to the non-probability sampling strategy. Findings: Principal leadership, organizational environment, and interpersonal communication all have a favorable and substantial impact on teacher organizational commitment, according to this study. Conclusion: The outcomes of this study show that putting principle relational leadership into practice and changing strategy into practice can boost teachers' job commitment at the school level. Keywords: principal leadership, organizational climate, interpersonal communication, teacher organizational commitment.DOI: http://dx.doi.org/10.23960/jpp.v12.i1.202217
                        
                        
                        
                        
                            
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