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For over a decade, Immigration and Customs Enforcement (ICE) has formed partnerships allowing local police to enforce immigration law by identifying and arresting undocumented residents. Prior studies, using survey data with self-reported immigrant and citizenship status, provide mixed evidence on their demographic impact. This study presents new evidence based on Hispanic public school enrollment. We find local ICE partnerships reduce the number of Hispanic students by 10% within 2 years. We estimate partnerships enacted before 2012 displaced more than 300,000 Hispanic students. These effects are concentrated among elementary school students. We find no corresponding effects on the enrollment of non-Hispanic students and no evidence that ICE partnerships reduced pupil-teacher ratios or the percentage of students eligible for the National School Lunch Program.