This study examined predictors of student achievement success related to principal leadership. It analyzed dispositional characteristics like a principal's experience, education level, and self-efficacy. It also considered environmental predictors like gender, school location, and student population. The results showed that a principal's self-efficacy has a moderate influence on student achievement. Gender and student population also demonstrated some predictive influence. The study aimed to determine which principal characteristics most influence student achievement success and to what degree a principal's self-efficacy impacts achievement.