Can incentives deliver value in the public sector, despite major principal-agent challenges? We evaluate a political reform that introduced individual teacher performancerelated pay and tournaments in public schools in Portugal. We find that the focus on individual performance decreased student achievement, as measured in national exams, and increased grade inflation. The results follow from a difference-in-differences analysis of matched student-school panels and two complementary control groups: public schools in regions that were exposed to lighter reforms; and private schools, whose teachers had their incentives unchanged. Students in public schools with a higher proportion of teachers exposed to the tournament also perform worse. Overall, our results highlight the potential social costs from disruption of cooperation amongst public sector workers due to competition for promotions.
Author: Pedro S. Martins, João R. Ferreira
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Number of pages: 53
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