Resignation letters are professional courtesies that extend your professionalism, even in the last days of current employment. Open your letter with an introductory paragraph that explains your intention.The header at the top of the resignation letter (the same thing as a letterhead) should include your name, address, phone number and email. This article will cover some pointers for writing a flawless resignation letter for graduate studies. This sample resignation letter is available for use on UpCounsel. Your resignation letter does not have to say why you're leaving the job. I am writing to formally announce my resignation from my position as a chemistry teacher at Lincoln High School. Located in the center of the Santa Clara Valley on the southern shore of San Francisco Bay, San Jose covers an area of 179.97 sq mi (466.1 km 2 ).