The teacher must be informed in writing of the time, . . . The teacher must also be informed in writing of the reasons for nonrenewal. . . . The reasons given by the board for not renewing a teacher's contract must be sufficient to justify the contemplated action of the board and may not be frivolous or arbitrary but must be related to the ability, competence, or qualifications of the teacher or the necessities of the district such as lack of funds calling for a reduction in the staff. At the meeting with the board the teacher may then produce such evidence as may be necessary to evaluate the reasons for nonrenewal, and either party may produce witnesses to confirm or refute the reasons. The administrator shall substantiate the reasons with written or oral evidence presented at the meeting. . . .
All witnesses are subject to questioning for the purposes of clarification.
At the meeting, the board shall discuss the evidence presented . If the reasons for nonrenewal have not been substantiated, the nonrenewal proceedings will be dismissed. The meeting must be an executive session of the board unless both the school board and the teacher agree that it is to be open to other persons or the public. . . . The determination not to renew a contract if made in good faith is final and binding on all parties. . . . Mehlhoff also claims a similar requirement is mandated by the procedure agreed upon at the start of the meeting.