Charter, the person being searched must have a "reasonable expectation of privacy". Given he was a student, did M.R. have "reasonable expectation of privacy"? The Supreme Court held he did not: "The reasonable expectation of privacy of a student in attendance at a school is certainly less than it would be in other circumstances. Students know that their teachers and other school authorities are responsible for providing a safe environment and maintaining order and discipline in the school. They must know that this may sometimes require searches of students and their personal effects and the seizure of prohibited items. It would not be reasonable for a student to expect to be free from such searches." In fact, the provincial Education Act implied that searches were reasonable and acceptable. The court concluded that the search was authorized by law, that the law was reasonable, and (in this particular case) that the vice-principal had acted reasonably. Moreover, the court ruled that a teacher or principal does not have to get a warrant to search a student if he or she has reasonable grounds (a good reason) to believe that a school rule has been or is being broken and if he or she has good reason to believe that evidence of the violation will be found in the location or on the person of the student searched. Reasonable grounds can be information received from just one student if the principal or teacher thinks that the student is credible. Third, M.R.'s lawyer had argued that section 10(b) had been violated because his client had not received counsel immediately after being detained in the vice-principal's office. The court ruled that this section did not apply to "detentions" within a school environment since it was designed to apply to cases where a person was detained by the police during a criminal investigation. The factors to be considered in determining whether a search conducted by a teacher or principal in the school environment was reasonable can be summarized in this manner: The first step is to determine whether it can be inferred from the provisions of the relevant Education Act that teachers and principals are authorized to conduct searches of their students in appropriate circumstances. In the school environment such a statutory authorization would be reasonable. The search itself must be carried out in a reasonable manner. It should be conducted in a sensitive manner and