Learn what to include in your cover letter for a teaching position when you have no experience and use our template and examples as a guide. To write an application letter for a teaching position, start with a formal greeting and clearly state your interest in the role.In this video, I walk you through how to write an effective, succinct, and impactful cover letter. Dear Cecilia Donovan, I am writing to express my strong interest in the Substitute Teacher position at Teaching Assistance Solutions. Second Paragraph (4-8 sentences):. • Based on the job description, connect your experience to the needs of the position. I am writing to express my deep interest in the open elementary-level teaching position in your school district.