Here are 3 examples that you can use for resignation letter as Assistant Professor -. Resignation letters should use the formal greeting: "Dear".The first sentence in the letter should state that you are resigning and when. I am writing to formally tender my resignation from my position as an Assistant Professor at Crestwood High School, effective June 20, 2053. The letter should be signed and attached to a cover e-mail. The date of retirement would normally be the end of either the fall or spring semester. Here are 3 examples that you can use for resignation letter as Visiting Assistant Professor -. Hillsborough County Superintendent Addison Davis Resignation Letter Free download as Word Doc (. Events from the year 2019 in the United Kingdom. Lack of agreement on how to proceed with withdrawing from the EU led to substantial political turmoil.