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Sarah Komisarow

Sarah Komisarow, Emily Pakhtigian.

In this paper we study the effects of three large, nearly-simultaneous coal-fired power plant closures on school absences in Chicago. We find that the closures resulted in a 7 percent reduction in absenteeism in nearby schools relative to those farther away following the closures. For the typical elementary school in our sample, this translates into around 372 fewer absence-days per year in the aggregate, or around 0.71 fewer annual absences per student. We find that reductions in absences were larger in schools where pre-closure exposure to coal-fired power plants was more intense: namely, schools with low levels of air conditioning, schools more frequently in the wind path of the plants, and non-magnet (i.e., neighborhood) schools where students were more likely to live nearby. To explore potential mechanisms responsible for these absence reductions we investigate the effects of the closures on housing values and children’s respiratory health. We do not find statistical evidence of endogenous migration into neighborhoods near the coal-fired power plants following the closures but do find declines in emergency department visits for asthma-related conditions among school-age children.

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Robert Gonzalez, Sarah Komisarow.

In this paper we study the impact on student absenteeism of a large school-based community crime monitoring program that employed local community members to monitor and report crime on designated city blocks during students’ travel to and from school. We find that the program resulted in a 0.78 percentage point reduction in the school-level absence rate (11 percent effect). We explore two potential channels to explain this: we find improvements “outside of the school walls” in the form of reduced crime near treated schools and “inside of the school walls” in the form of reduced incidents of serious student misconduct.

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Sarah Komisarow.

StudentU is a comprehensive program that provides education, nutrition, and social support services to disadvantaged students outside of the regular school day. In this paper I investigate the effects of this multi-year program on the early high school outcomes of participating students by exploiting data from oversubscribed admissions lotteries. I estimate that lottery winners who entered the comprehensive program with low baseline achievement earned more course credits (0.82 credits), achieved higher grade point averages (0.37 grade points), and were less likely to be suspended (17.1 percentage points) during ninth grade than their lottery loser counterparts. Investigation of candidate channels indicates that increased student effort and improved behavior in school are likely mechanisms. Using an index of early high school outcomes, I predict that lottery winners are around 4 percentage points more likely to graduate from high school than lottery losers (5 percent effect). These results suggest that comprehensive services delivered outside of the regular school day have the potential to improve the educational outcomes of disadvantaged students.

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