This paper examines the role of teaching assistants and other personnel on student outcomes in elementary schools during a period of recession-induced cutbacks in teachers and teaching assistants. Using panel data from North Carolina, we exploit the state's unique system of financing its local public schools to identify the causal effects of teaching assistants and other staff on student test scores in math and reading and other outcomes. We find remarkably strong and consistent evidence of positive contributions of teaching assistants, an understudied staffing category, with larger effects on outcomes for minority students than for white students. A supplemental table is appended.