The Fourth Amendment's ban on unreasonable searches applies to those conducted by public school officials as well as those conducted by law enforcement personnel, but public school officials can use the less strict standard of reasonable suspicion instead of probable cause. Decided January 15, 1985 (argued March 28, 1984). Opinion of the Court: Byron White → go there Applied: the Fourth Amendment → go there Topic: Fourth Amendment rights. New Jersey v. T. L. O., 469 U.S. 325 (1985), is a landmark decision by the Supreme Court of the United States which established the standards by which a public school official can search a student in a school environment without a search warrant, and to what extent. Wiki link