(2) Safe school plan. [...] The plan, at a minimum, shall include the following:
(a) Conduct and discipline code.
(I) A concisely written conduct and discipline code that must be enforced uniformly, fairly, and consistently for all students. Copies of the code must be provided to each student upon enrollment at the elementary, middle, and high school levels and be posted or kept on file at each public school in the school district. The school district shall take reasonable measures to ensure that each student of each public school in the school district is familiar with the code. The code must include, but need not be limited to:
(I) A written policy concerning searches on school grounds, including searches of student lockers.