摘要:There is a substantial research base, mainly in mainstream education, acknowledging that teachers have a great impact on student achievement. However, as far as we know, little if any empirical evidence exists to enable us to determine which set of English as a foreign language (EFL) teacher characteristics correlates with positive student learning outcomes. In line with this, our study investigated three teacher-related variables–teaching style, teachers’ sense of efficacy, and teacher reflectivity–to see how they relate to student achievement gains in an English-language teaching (ELT) context. Thirty EFL teachers teaching in Iranian junior and senior high schools participated in this study, with the final-exam score of the participating students serving as the dependent variable of the study. The results showed that the study variables can significantly predict student achievement. Individual correlations were also found among the variables. The study highlights teachers’ central role in language teaching settings and the need for a closer inspection of teacher-related variables.