Air Filters, Pollution, and Student Achievement

Michael Gilraine

Journal of Human Resources, 2025, vol. 60, issue 5, 1469-1506

Abstract: This work identifies the impact of installing air filters in classrooms for the first time. To do so, I leverage a unique setting arising from the largest gas leak in U.S. history, whereby the offending gas company installed air filters in every classroom within five miles of the leak (but not beyond). Using a spatial regression discontinuity design, I find substantial improvements in student performance: air filters raised test scores by 0.1–0.2σ. Natural gas was not detected inside schools, implying that the filters improved air quality by removing common pollutants. Thus, these results should extend to other settings.

JEL-codes: I10 I21 I24 I28 (search for similar items in EconPapers)
Date: 2025
Note: DOI: https://doi.org/10.3368/jhr.0421-11642R2
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