Do Higher Salaries Buy Better Teachers?
NBER Working Paper No. 7082
Important policy decisions rest on the relationship between teacher salaries and the quality of teachers, but the evidence about the strength of any such relationship is thin. This paper relies upon the matched panel data of the UTD Texas School Project to investigate how shifts in salary schedules affect the composition of teachers within a district. The panel data permit separation of shifts in salary schedules from movement along given schedules, and thus the analysis is much more closely related to existing policy proposals. In analyses both of teacher mobility and of student performance, teacher salaries are shown to have a modest impact. Teacher mobility is more affected by characteristics of the students (income, race, and achievement) than by salary schedules. Salaries are also weakly related to performance on teacher certification tests appearing to be relevant only in districts doing high levels of hiring, but preliminary examination shows that the certification tests are not significantly related to student achievement. The only significant relationship between salaries and student achievement holds (implausibly) for existing experienced teachers and not for new hires or for probationary teachers.
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