Learn how to write a resignation letter (and what not to include) and then use our example letters as a guide. You don't have to send your resignation letter 30 days before the start of the school year, you have to send it 30 days before your planned last day.It's best to tell your boss that you're moving on to the next step in your career "facetoface or over video call," with at least two weeks' notice. Reason for Resignation: INSTRUCTIONS. Employee–Complete Section I and forward to your supervisor. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Submit a signed letter of resignation to your immediate supervisor, with a copy to your Human Resources Director. State your intention to resign: Clearly state in the opening paragraph that you are resigning from your position. Be direct and to the point.