School administrators can search lockers without a warrant based on reasonable suspicion of a violation of school rules or laws, justified by the need to maintain a safe school environment.
The Fourth Amendment of the Constitution protects U.S. citizens from unlawful search and seizure of possessions. In New Jersey v. T.L.O. (1985), schools can search students' possessions if there is reasonable suspicion of a violation of the law or school rules. The safety of the school environment can justify searches without a warrant, as seen in cases like Board of Education of Independent School District No. 92 of Pottawatomie County v. Earls (2002).
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