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The Fourth Amendment to the U.S. Constitution protects persons from “unreasonable searches and seizures.” Searches can be physically invasive or may invade individuals' legitimate expectation of privacy. Physical invasions, such as being forcibly restrained and ordered to strip for decontamination, seem clearly to invoke Fourth Amendment protection. However, the question of whether a search has taken place under less physically invasive circumstances, such as when a campus security officer looks into an open dormitory room, can be less clear. To make successful claims for protection under the Fourth Amendment for nonphysical invasions, individuals must have genuine beliefs not only that they have expectations of privacy but also that these expectations are reasonable in the view of an ordinary, reasonably prudent person experiencing the same circumstances. If challenges fail either prong of this test, then individuals lack legitimate expectations of privacy and are not entitled to protection under the Fourth Amendment.

At the same time, it is important to note that the right to be free from unreasonable searches or invasions of privacy under the Fourth Amendment cannot be casually conflated with the right of privacy under the Fourteenth Amendment. Moreover, faculty First Amendment and academic freedom concerns over access to material that is sexually explicit on the Internet via university-owned computers and systems, as was the issue in Urofsky v. Gilmore (2000), should not be confused with issues relating to searches. In light of the significant implications involving the rights of faculty members, particularly those at public colleges and universities, this entry examines the parameters of their Fourth Amendment rights, even though many of the cases are presented as nonbinding precedent due to the relative dearth of litigation in this important arena.

The General Rule for Searches: Probable Cause

The Fourth Amendment prohibits only unreasonable searches. Law enforcement officials often conduct investigations that obviously invade legitimate expectations of privacy, such as searches of the persons and homes of criminal suspects. In most such cases, searches of homes may occur only following the presentation of evidence to judges or magistrates and the issuance of warrants. This process ensures that searches are conducted following showings of probable cause that persons, places, or things to be searched will yield evidence of crimes. As a general rule, then, warrantless searches are deemed to be unreasonable and are prohibited by the Fourth Amendment. Yet not every investigative effort by governmental officials involves the enforcement of state or federal laws. Hence, the courts have recognized important exceptions to the general prohibition on warrantless searches. While searches of students in K-12 settings do not directly implicate the rights of faculty members in higher education, the U.S. Supreme Court's rationale in its only case on this point is instructive for higher education.

Lesser Standard for Searches

Searches of Public School Students

In New Jersey v. T.L.O. (T.L.O., 1985), after a high school student was accused of smoking and a subsequent search of her purse by an assistant principal revealed that she possessed marijuana, she was ultimately unsuccessful in her attempt to suppress the evidence based on her claim that the warrantless search violated her rights under the Fourth Amendment. Although acknowledging that a search occurred within the meaning of the Fourth Amendment, the Supreme Court held that the Fourth Amendment's warrant requirement was unsuited for school environments, because it would interfere with the need of educational officials to take swift and informal disciplinary action. The Court then determined that public school officials possess “special needs” and that these needs justify the application of a reasonableness standard for searches rather than the traditional probable cause standard that applies to the police.

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