The re-shuffling of students due to the end of student busing in Charlotte- Mecklenburg provides a unique opportunity to investigate the relationship between changes in student attributes and changes in teacher quality that are not confounded with changes in school or neighborhood characteristics. Comparisons of OLS and IV results suggest that the spatial correlation between teachers’ residences, students’ residences and schools could lead to spurious correlation between student attributes and teacher characteristics. The re-shuffling of students led to teacher resorting so that schools that experienced a repatriation of black students experienced a decrease in various measures of teacher quality (including estimated value-added). I provide evidence that this was primarily due to a labor supply response.