Below are examples of resignation letters for the school administration and principal, coworkers, and parents of students. 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.An effective resignation letter includes your name, your job title and your departure date. Under the Texas Education Code, contract employees are required to resign no later than 45 days before the first day of instruction for the school year. Employees who desire to resign or retire must notify the district of their intent to separate from the district. My final working day will be May 7. Are you thinking about handing a resignation letter but you don't know how to start writing one? If so, then you came to the right place! Current, prospective and former employees can explore People Excellence forms and view quick links to important information in a centralized location. "Our country is facing a grave challenge," Freeland wrote in her resignation letter.