Tennessee Code Title 49. Education § 49-6-4205

(1) A particular student has violated school policy;

(2) The search will yield evidence of the violation of school policy or will lead to disclosure of a dangerous weapon, drug paraphernalia or drug;

(3) The search is in pursuit of legitimate interests of the school in maintaining order, discipline, safety, supervision and education of students;

(4) The search is not conducted for the sole purpose of discovering evidence to be used in a criminal prosecution; and

(5) The search shall be reasonably related to the objectives of the search and not excessively intrusive in light of the age and sex of the student, as well as the nature of the infraction alleged to have been committed.