In this article, we explain how to construct a formal resignation letter as well as provide an example to help you write your own. In the opening paragraph, clearly state that you are resigning from your position.Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last. I am writing to notify you of my resignation from POSITION at SCHOOL, effective DATE. The following is a resignation letter example for an employee leaving a job and returning to school. Download the resignation letter template.