The Impact of Teacher Collective Bargaining Laws on Student Achievement: Evidence from a New Mexico Natural Experiment

Benjamin Lindy:

This Note uses the 1999 sunset and 2003 reauthorization of New Mexico’s public employee collective bargaining law to estimate the causal effect of teacher collective bargaining on student achievement. This Note finds that mandatory teacher bargaining laws increase the performance of high-achieving students while simultaneously lowering the performance of poorly achieving students. After establishing this core empirical result, the Note explores its implications for current trends in American education policy and for normative arguments about the role of teachers’ unions in public schools.

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Act 10.