Aaron Phipps

In theory, monitoring can improve employee motivation and effort, particularly in settings lacking measurable outputs, but research assessing monitoring as a motivator is limited to laboratory settings. To address this gap, I leverage exogenous variation in the presence and intensity of teacher monitoring, in the form of unannounced in-class observations as part of D.C. Public Schools’ IMPACT program. As monitoring intensifies, teachers use more individualized teaching and emphasize higher-level learning. When teachers are unmonitored, their students have lower test scores and increased suspensions. This novel evidence validates monitoring as a potential tool for enhancing teacher pedagogy and employee performance more broadly.

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Given the simultaneous rise in time-to-graduation and college GPA, it may be that students reduce their course load to improve their performance. Yet, evidence to date only shows increased course loads increase GPA. We provide a mathematical model showing many unobservable factors -- beyond student ability -- can generate a positive relationship between course load and GPA unless researchers control student schedules. West Point regularly implements the ideal experiment by randomly modifying student schedules with additional training courses. Using 19 years of administrative data, we provide the first causal evidence that taking more courses reduces GPA and increases course failure rates, sometimes substantially.

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