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In 2005, hurricanes Katrina and Rita forced many children to relocate across the Southeast. While schools quickly enrolled evacuees, receiving families worried about the impact of evacuees on non-evacuee students. Data from Houston and Louisiana show that, on average, the influx of evacuees moderately reduced elementary math test scores in Houston. We reject linear-in-means models of peer effects and find evidence of a highly non-linear but monotonic model--student achievement improves with high ability and worsens with low ability peers. Moreover, exposure to undisciplined evacuees increased native absenteeism and disciplinary problems, supporting a "bad apple" model in behavior.

I examine academic performance and college going for public school students affected by Hurricanes Katrina and Rita. Students who are forced to switch schools due to the hurricanes experience sharp declines in test scores in the first year following the hurricane. However, by the second and third years after the disaster, Katrina evacuees displaced from Orleans Parish appear to benefit from the displacement, experiencing a 0.15 standard deviation improvement in scores. The test score gains are concentrated among students whose initial schools were in the lowest quintile of the test score distribution and among students who leave the New Orleans MSA. Katrina evacuees from suburban areas and Rita evacuees (from the Lake Charles area) eventually recover most of the ground lost during 05-06 but do not experience long term gains relative to their pre-Katrina test scores. High school age Orleans evacuees have higher college enrollment rates than their predecessors from the same high schools. Meanwhile, Katrina evacuees from the suburbs experience a 3.5 percentage point drop in their rate of enrollment in four year colleges. Those evacuees do not to make up for the decline in the subsequent two years. Later cohorts of suburban New Orleans evacuees are unaffected. The results suggest that for students in the lowest performing schools, the long term gains to achievement from switching schools can more than offset even substantial costs of disruption.