- Plyler v. Doe
- The 1982 Supreme Court case holding that states cannot deny children a free public K-12 education because of immigration status. Schools also cannot charge them tuition for it.
- Sensitive locations / protected areas
- Places such as schools, hospitals and places of worship where federal policy limited immigration enforcement from 2011 until January 2025. The policy required headquarters approval for actions there.
- Judicial warrant
- An order signed by a judge or magistrate after a finding of probable cause. It names the court and can authorize a search of a specific place.
- Administrative warrant
- A form such as the I-200 or I-205 signed by an immigration officer, not a judge. By itself, it does not authorize entry into a home or other private area.
- FERPA
- The Family Educational Rights and Privacy Act, a federal law that generally requires parent consent before a school shares a student's education records. Exceptions include a court order or lawfully issued subpoena.
- Directory information
- Basic student details, like name, address and phone number, that a school may release under FERPA without consent. Parents can opt out each year.
- Mixed-status family
- A family whose members have different immigration statuses. An example is a US citizen child with an undocumented parent.
- Safe-zone policy
- A school board policy that limits immigration agents' access to school property and student information. Common terms include requiring a judicial warrant and routing agents to the superintendent's office.
- Family preparedness plan
- A written plan naming who will care for children if a parent is detained. It also lists where key documents are and which lawyer to call.
- Unaccompanied child
- Under federal law, a child under 18 with no lawful immigration status and no parent or legal guardian in the US available to care for them. Many enroll in local public schools while their immigration cases move through court.
- Rapid response network
- A local hotline and volunteer team that confirms reports of enforcement activity, documents it and connects affected families to legal help.
- Chronic absenteeism
- Missing 10 percent or more of school days in a year for any reason. Many states fund schools partly by attendance, so absences can cut district budgets.