(1) Publications that are obscene as to minors, as defined by state law;
(2) Publications that are libelous or slanderous, as defined by state law;
(3) Publications that constitute an unwarranted invasion of privacy, as defined by state law; or
(4) Publications that so incite students as to create:
(A) A clear and present danger of the commission of unlawful acts on school premises;
(B) The violation of lawful school regulations; or
(C) The material and substantial disruption of the orderly operation of the school.