@techreport{NBERw15291,
 title = "Katrina's Children: Evidence on the Structure of Peer Effects from Hurricane Evacuees",
 author = "Scott Imberman and Adriana D. Kugler and Bruce Sacerdote",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "15291",
 year = "2009",
 month = "August",
 URL = "http://www.nber.org/papers/w15291",
 abstract = {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.},
}