357A.22  Personal liability.
  Except as otherwise provided in this chapter, a director, officer, employee, or other personnel of the board are not liable on the district’s debts or obligations and a director, officer, employee, or volunteer of the board is not personally liable in that capacity, for a claim based upon an act or omission of the person performed in the discharge of the person’s duties, except for any of the following:
  1.  A breach of the duty of loyalty to the district.
  2.  Acts or omissions not in good faith or which involve intentional misconduct or knowing violation of the law.
  3.  A transaction from which the person derives an improper personal benefit.
88 Acts, ch 1170, §2