Mistaken reports from CPS about immigration agents at a Back of the Yards school Friday have raised fear in the community and questions about why they took so long to clear up. Why it matters: The incident happened at a time when schools were on high alert from President Trump's new rules allowing Immigration and Customs Enforcement (ICE) agents to enter schools and churches.

Several school districts and the Massachusetts attorney general issued guidance on how schools should react if approached by ICE agents.