ยง 683-a. Presentation of grievance. Every public school teacher shall
have the right to present his grievance to his employer in accordance
with the provisions of this article, free from interference, coercion,
restraint, discrimination or reprisal, and the grievance procedure
established under this article shall provide the right to be represented
at all stages thereof and the representative shall be designated by the
public school teacher at the time he presents his grievance or at a
subsequent date.