This study aims to describe and analyze the influence of school principal leadership, learning tools, and teacher work motivation on teacher competency in productive programs at State Vocational Schools in Manado. The research method used was a survey method, with a correlational approach and path analysis. The population of this research is all productive vocational program teachers in the State Vocational School in the city of Manado, while the sample of this study is the productive program teachers in the State Vocational School in the City of Manado as many as 71 people taken by proportional stratified random sampling. The results showed that: (1) the leadership of the principal (X1) and the learning tools (X2) had a positive and significant direct effect on teacher work motivation, respectively; (2) the leadership of the school principal (X1), learning facilities (X2), and teacher work motivation (Z) have a positive and significant direct effect on teacher competence, which is 58.2%, 62.7%, and 62.9% in a row; and (3) the leadership of the school principal and learning facilities each indirectly, positively, and not significantly influence teacher competence through work motivation. Based on these findings, it is recommended to improve the quality of teacher competence directly. This is done by improving the quality of leadership of the school principal, means of learning, and teacher work motivation.