Madison Teachers, Inc. Newsletter, via a kind Jeanie Kamholtz email (PDF):

Sections IV-I and IV-J of the MTI Teacher Collective Bargaining Agreement set forth the procedures which principals are contractually required to use when management notifies a teacher that he/she is being considered for non-renewal of contract. By Contract, the District is obligated to advise a teacher before May 1, if they are considering non-renewal. Under Wisconsin State Statutes, such a notice must be delivered to the teacher on or before May 15. Such notice could also be on one’s evaluation that must occur by April 15 per your Collective Bargaining Agreement.
MTI staff should be present at any and all meetings
between the teacher and any administrator in this regard, given that the meeting may indeed affect the teacher’s continued employment status. The teacher has the legal right to MTI representation and does not have to begin or continue a meeting without representation. See the reverse side of your MTI membership card.
For probationary teachers, a request for a hearing before the Board of Education must be submitted within five (5) days of the teacher’s receipt of the notice that the Board of Education is considering non-renewal of the teacher’s contract. For non-probationary staff, a request for arbitration must be made within fifteen (15) days of a non-renewal notice. It is extremely important for any teacher receiving such a notice to immediately contact MTI.