Purpose: The primary purpose of this study is to explore how the characteristics of the principal preparation programs of newly hired elementary school principals might influence school achievement through the development of well-qualified teams of teachers by the school. Of primary interest is whether elementary school principals from preparation programs with certain types of characteristics are more or less likely to build teams of well-qualified teachers who, in turn, positively affect overall student achievement. A secondary purpose is to establish a relationship between the overall school-level qualifications of teams of teachers and school-level student achievement on the Texas Assessment of Knowledge and Skills (TAKS) to underscore the importance of the first relationship. Research Design: This quantitative study utilizes ordinary least squares regression to analyze seven extracts of data from the Texas Education Agency, merged together to create a data set that matched teachers, principals, school characteristics, and student achievement to individual schools. First, the authors establish the relationship between school-level teacher-team quality and school-level student outcomes on the TAKS. Second, they examine the relationship between principal preparation program characteristics and the measures of teacher-team quality after controlling for principal characteristics, school characteristics, and student achievement. Furthermore, because the authors hypothesize that principals cannot quickly alter the quality of teams of teachers in schools, they examine school achievement and teacher-team quality over four years. (Contains 1 note and 8 tables.)