The roles of teachers as educators are to impart knowledge and skills to students, as well as develop their mental character. Therefore, this study aims to analyze the influence of locus of control, leadership style, environmental factors, and work motivation on teachers' performance in guiding students toward a higher level of education. A sample size of 720 high school teachers was used to explore the perceptions of locus of control, leadership style, environmental factors, and work motivation on performance. Furthermore, the data were analyzed using the Smart-Partial Least Square software. The results showed a direct effect of locus of control, leadership style, and environmental factors on work motivation. Moreover, there was an effect of locus of control, environmental factors, and work motivation on teachers' performance. These results highlight the necessity for qualified teachers, which the government of Indonesia needs to fulfill in order to achieve a better education across the country.