An effective resignation letter includes your name, your job title and your departure date. Fill out the form on this page to get a free editable Google Docs template with sample teacher resignation letters to help you compose your own.While resignations should be submitted in writing, nothing in this Policy prevents the Superintendent or designee from accepting a resignation made verbally. Below is a sample union resignation letter. Send the original to the union, send a copy to your employer, and save a copy for your files. Are you a teacher looking to leave your current position? I thought of a wrinkle in the situation last night. I technically never signed a contract at the beginning of this assignment. My resignation is effective immediately.