This study examines the associations between county-level immigration arrests and academic achievement, absenteeism, and measures of school climate and safety for students in the California CORE districts. We found consistent evidence that Latinx and Latinx English learner students experienced declines in academic achievement, attendance, and perceptions of school climate and safety when there were more immigration arrests in the counties where their schools were located. These relationships were strongest for arrests that occurred during the Trump administration compared with those that occurred during the second term of the Obama administration. We discuss the implications of our findings and offer suggestions for policies and practices that schools and districts could implement to create safer, more welcoming environments for their immigrantorigin students and families in the face of anti-immigrant actions.