A mixed method study on the influence of principal's transformational leadership on teacher efficacy

The purpose of this study was to examine the influence of principal's transformational leadership behaviors on teacher efficacy in Thailand. This study used a mixed-methods design. A total of 385 teacher participants responded to a survey that collected data about their demographic characteristics, their perceptions of principal transformational leadership, and their' sense of efficacy. In addition, a qualitative sample of 4 teachers and 4 principals are selected for in-depth interviews. Data from the survey were analyzed using descriptive statistics, analyses of variance, and multiple regression equation estimates. Teachers and principals' interview were analyzed in order to further explain the results from the survey.;The study found principal's transformational leadership behaviors have a statistically significant effect on teacher efficacy. Results from the multiple regression analysis indicated that "Developing a widely shared vision for the school" of principal is the most important variable to predict teacher efficacy. Analysis of the qualitative data indicated that the transformational leadership style of a principal positively influence teacher efficacy. Eight transformational leadership dimensions impact teachers' sense of efficacy. Furthermore, principal's transformational leadership affects directly and indirectly to student performance through teacher efficacy and teacher efficacy affects directly to student performance.