Reports in recent years have demonstrated math teacher shortages in hard-to-staff school contexts due to high rates of teacher turnover. In this paper, I evaluate the impact of exposure to new, new-to-school, and emergency/unlicensed teachers on student math achievement on one recent cohort of Indiana students in 3rd through 8th grade. I find that…

Mentoring and support of beginning teachers is a key element of reducing teacher attrition. Most schools have implemented an induction program with assigned mentors for inexperienced teachers. However, the problem of attrition begins before the induction year of teaching, given that many certified teachers never enter a classroom. This…