What is the standard the court uses to determine whether a school search is legal or not?

The standard the court uses to determine the legality of a school search is based on the "reasonable suspicion" standard, which is less stringent than the "probable cause" standard used in criminal law. Courts assess whether the search was justified at its inception and whether the scope of the search was reasonably related to the circumstances that justified it. Factors such as the age of the student, the nature of the infraction, and the context of the search are also considered. Overall, the search must be reasonable and not overly intrusive given the specific situation.