How To Write A Formal Letter To A Head Teacher . The headmaster’s letter would normally begin with the date and a formal salutation such as; [11] write the greeting how your child addresses her teacher. Letter Of Interest Teacher Business letter example, Teacher cover from www.pinterest.com Learning how to write an email to a teacher can be an intimidating task. (name of director) through this, i am writing to you. For example, a thank you letter from one weak student to a teacher for their support and guidance until the end of college.