This study examined the relationships among leader preparation practices and leader, school, and student outcomes through hierarchical regression analysis of questionnaire (N = 88) and state data. The findings suggest that, after controlling for demographics, a significant (p \u3c .05) positive relationship was found between preparation practices and leader behavior (Δ R2 = .05); preparation practices and student achievement (Δ R2 = .05); preparation practices and leaders’ instructional knowledge (Δ R2 = .06); and leaders’ instructional knowledge and instruction practices in schools (Δ R2 = .05). These findings suggest the further inclusion of the essential practices into preparation programs