CPS officials initially said agents who identified themselves as ICE arrived at Hamline Elementary in Back of the Yards Friday, but it was actually Secret Service agents looking for an 11-year-old who posted an anti-Trump video,

The Secret Service is continuing to release information after Chicago school officials responded to what they thought was an ICE action Friday.

The agents turned out to be unrelated to immigration, officials said hours later. They were from the Secret Service, investigating a threat.

CHICAGO -- The U.S. Secret Service said its agents visited a Chicago elementary school Friday while investigating a threat, hours after school officials mistakenly claimed that U.S. Immigration and Customs Enforcement agents had come to the building.

Officials with Chicago Public Schools claimed U.S. Immigration and Customs Enforcement agents were seen at Hamline Elementary School. The Secret Service said special agents were investigating a threat.

At least eight large public school districts across the United States have vowed in recent days to try to protect undocumented immigrant students and their families from President Donald Trump's mass deportation push.

Chicago Public Schools officials reportedly mistook Secret Service agents for ICE officers during a chaotic morning incident amid migrant crackdowns.

The first official elected Chicago school board meeting focused on protecting Chicago Public School students from ICE, and a plea from the CPS CEO to undocumented parents.

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

This story originally appeared in Kids Today, Vox’s newsletter about kids, for everyone. Sign up here for future editions. Ever since Donald Trump won the presidential election last November, kids around the country have been scared about what his promise of mass deportations might mean for them and their classmates.

Under the 1982 U.S. Supreme Court case Plyler v. Doe, it is unconstitutional to deny the benefits of public education to undocumented students. Durham Public Schools believes all children are equally deserving of a sound basic education and does not ask families for their immigration status or record that information in student records.