An effective resignation letter includes your name, your job title and your departure date. In the opening paragraph, clearly state that you are resigning from your position.You are free to resign with thirty days notice. Check with the union and don't count on what I'm saying but the rule is give thirty days notice. Below are examples of resignation letters for the school administration and principal, coworkers, and parents of students. You want to give at least a two weeks' notice. One of the most important part of quitting is to write a good resignation letter as Academic coordinator. I sincerely regret the fact that I have to leave {Your Company}. A resignation letter is a formal document used to communicate your intention to terminate your employment contract. You will receive information in the mail for continuing your benefits coverage under COBRA.