Question

A high school principal has reason to suspect some students of bringing weapons onto campus. After receiving a tip from a teacher, the principal searches the lockers of three students and finds a knife and a small handgun in one student's locker. The other two lockers turn up nothing.
QUESTION: What powers does the principal, acting on behalf of the student body, have?
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I hope there is someone to answer this! Thanks in advance!

Answer 1

He has the power to put the school into lock down and call the police. 
He could also request a campus police officer to put the student in hand cuffs and have a pat down! hope this is a hypothetical an not actually happening. Your welcome though!

Answer 2

Answer:

The US Supreme Court determined that schools may conduct searches if they have a reasonable suspicion that a crime might be commited or that school policies aren't being followed.

Explanation:

The Fourth Amendment to the Constitution of the United States protects the people on their persons and their possessions against unreasonable searches and seizures. However, the US Supreme Court determined in the New Jersey v. T.L.O. 1985 case, that a school "may properly conduct a search of a student's person if the official has a reasonable suspicion that a crime has been or is in the process of being committed, or reasonable cause to believe that the search is necessary to maintain school discipline or enforce school policies". The high school principal, following the tip from the teacher, could search the students' lockers. There's reasonable suspicion that school rules aren't being followed, as possession of weapons is prohibited.