The board of directors of a school district shall not take any disciplinary action against an employee or contractor of the school district for disclosing information to any public official or law enforcement agency, including a disclosure to the ombudsman pursuant to section 2C.9, subsection 3, if the employee or contractor reasonably believes the information evidences a violation of law or rule, mismanagement, a gross abuse of funds, an abuse of authority, or a substantial and specific danger to public health or safety. For purposes of this section, “disciplinary action” includes termination of employment or the contractual relationship, suspension from employment, demotion, financial penalties, failing to take action regarding an employee’s or contractor’s promotion or proposed promotion, failing to provide an advantage in employment or the contractual relationship, and written or verbal reprimands.