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. Use our Teacher Resignation Letter template to give notification that you are leaving your position.Leave your school on good terms using our document. Teacher Resignation Letter. Customize any of these resignation letters in minutes using our free AI-powered resignation letter builder.. Below are examples of resignation letters for the school administration and principal, coworkers, and parents of students. How do you write a letter of resignation for a teacher? Teacher resignation letters should follow the basic format of a business letter.