An effective resignation letter includes your name, your job title and your departure date. The letter can be 2-3 sentences.Just say you are resigning with the effective date. A resignation submitted after the completion of the school year must be submitted a minimum of 30 calendar days prior to the first student attendance day. You can send in your resignation instead of signing the nonrenewal if you choose, nothing prevents it legally. I am writing to formally announce my resignation from my position as a Science Teacher at Springfield Elementary School, effective May 25, 2024. I am writing to formally announce my resignation from my position as a Science Teacher at Springfield Elementary School, effective May 25, 2024. Address your letter. It helps you resign professionally, promote a smooth transition, and put your health first.