In which case was it determined that school officials do not require a warrant for searches?

The case in which it was determined that school officials do not require a warrant for searches is New Jersey v. T.L.O. In this landmark decision, the Supreme Court addressed the balance between a student's right to privacy and the school's responsibility to maintain a safe and orderly environment. The Court found that the school officials could conduct searches based on "reasonable suspicion" rather than the higher standard of "probable cause" that is typically required for law enforcement officers.

This ruling highlighted that the unique environment of schools necessitates a different standard when it comes to searches, allowing educators to act quickly to address potential threats or violations of school rules without the delay that a warrant process would entail. The ruling set a precedent that school officials must act in the interest of the safety and well-being of their students, which sometimes requires immediate action without the need for a warrant.