This study determined whether there is an effect of principal leadership and teacher competence on teacher’s performance at SMP Negeri 1 Sungai Lilin, either partially or simultaneously. The population of this research is 40 teachers. The technique of collecting data using a questionnaire, with data analysis using multiple linear regression of SPSS 25. The results obtained in this study 1) there is no influence of principal leadership on teacher’s performance; 2) there is an effect of teacher’s competence on teacher’s performance; and 3) simultaneously there is an effect of principal leadership and teacher’s competence on teacher’s performance. This paper contributes to improve teacher’s performance through principal leadership and teacher’s competence.
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