Materials & Prep
Prepare a one-page handout with the Fourth Amendment text, the New Jersey v. T.L.O. summary, and the four application questions used below. Write “Search or speech?” and “Reasonable or unreasonable?” on the board. No special materials are needed beyond the handout and usual classroom setup.
Opening
Ask“A student reports that someone hid a stolen phone in a backpack during lunch. Which response seems fairest: search every backpack, search only the named student’s backpack, or search no backpack without more information?” Students silently choose, then explain their choice to a partner using ordinary fairness and privacy reasoning. Do not introduce amendment names yet.
ConnectInvite two or three responses. Point out that students already used two ideas: people should have privacy, and an authority may need a specific reason before searching. Explain that the Fourth Amendment applies this kind of reasoning to government searches and seizures. It does not mean “officials can never search,” and it does not mean every rights question is free speech.
Direct instruction
DisplayRead the Fourth Amendment from the Bill of Rights, ratified in 1791: “The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.”
DefineA search looks for information or items in a protected place or possession. A seizure takes control of a person or property. The key question is usually whether the government action was reasonable. In New Jersey v. T.L.O. (1985), the Supreme Court held that school officials may search a student when they have reasonable suspicion, and the search must be reasonably related to its purpose and not excessively broad. That is a lower bar than the one police must normally clear. Outside school, an officer ordinarily needs probable cause and often a warrant before searching a person or their belongings; a school official needs only reasonable suspicion, because courts weigh the school’s duty to keep students safe against the student’s privacy. The warrant and probable-cause language in the amendment text therefore does not describe what a principal must have.
Think aloud“The principal searches every backpack because one student reported a missing phone. A principal is a government actor, and backpacks are protected effects. This is a search. The report gives a reason to investigate, but it does not identify a particular backpack or student, so searching everyone is probably unreasonable. A common wrong answer is ‘free speech.’ Nothing here involves speaking or publishing. I must match the amendment to the government action.”
Post these four questions: Who acted? What person, place, or possession was searched or seized? What specific reason did the official have? Was the action reasonable in its purpose and scope?
Guided practice
Have students work in pairs on the following teacher-created scenarios. They annotate the four questions and end with “likely reasonable” or “likely unreasonable,” followed by evidence.
Scenario A: A student tells the assistant principal, “I saw Jordan put a vape in the small zippered case inside Jordan’s backpack.” The assistant principal asks Jordan to open the backpack. Jordan refuses. The assistant principal opens the backpack, finds the zippered case, and opens it. The vape is inside.
Scenario B: A principal hears that “someone may have a weapon” somewhere in the school and searches every student’s backpack, without additional information.
Scenario C: A student writes a newspaper editorial criticizing the school’s lunch policy. The school disagrees with the opinion but does not search the student or the student’s belongings.
Check for understandingPause after Scenario A. Students hold up one finger if the main issue is the Fourth Amendment, two fingers if it is mainly the First Amendment, and three if they need more evidence. Call on students to name the specific fact that supports their choice. For A, expect Fourth Amendment, a specific report, and a search limited to the reported location. For C, expect First Amendment because the central action is expression, not a search. Require students who say “free speech” for every scenario to identify what was said or published before choosing that amendment.
ScaffoldProvide this sentence frame: “The official action is a . It involves . The reason was . It was likely reasonable/unreasonable because .” Read each scenario aloud while students track the words.
Independent application
Students independently analyze these two scenarios using the four questions and write a short conclusion for each.
Scenario D: A police officer sees Sam place a backpack under a bench in a public park. A witness has reported that a person wearing a red jacket stole a bicycle, but Sam is wearing a blue jacket and there is no information connecting Sam or the backpack to the theft. The officer opens the backpack to look for evidence.
Scenario E: An assistant principal receives a specific report from a named student that Lee has a knife in the outer pocket of Lee’s backpack. The assistant principal asks Lee to open the backpack. Lee refuses, so the assistant principal opens only the outer pocket and finds a knife.
Students must use at least two pieces of evidence from the Fourth Amendment text, and for the school scenario from the T.L.O. summary as well. T.L.O. is a school-search case and does not set the standard for a police search outside school, so Scenario D is judged on the amendment alone. They may conclude that a case is uncertain, but they must identify the missing fact that would change their decision.
ExtensionStudents who finish early revise one fact in Scenario D or E to change the conclusion, then explain why that single change matters. For example, they may add a specific witness report connecting Sam to the theft or remove the specific report about Lee’s backpack.
Closing
Exit ticket“A principal searches one student’s backpack after a named witness reports seeing a phone stolen from that backpack. The principal searches only the main compartment and finds the phone. Apply the Fourth Amendment. Identify the official action, the protected possession, the specific reason, and whether the search was likely reasonable. Explain why ‘free speech’ is not the best amendment.” Collect the response as the closing measure of the objective.