A community member sent a video showing the moments Acero Schools said an adult was detained by U.S. Immigration and Customs Enforcement officers.

Two students were with the adult outside the Southwest Side school Wednesday morning, officials said. "It is really terrifying for families and traumatizing for students," one observer said.

The plan overrides the charter network's plan to shutter half of its schools. The change came after CPS officials warned that helping Acero keep all seven campuses could violate state law and be financially risky for CPS.