[Your letterhead, if desired; if not, your return address]
[Date of letter-month, day, and year]
[Recipient's first and last names]
[Street or P.O. box address]
[City, State ZIP code]
Dear [recipient's name]:
As another school year draws to a conclusion, I would like to take just a moment to express my sincere and deep thanks to you. I am so very grateful that you have been such as excellent teacher for my daughter, Sue, over the past year. She has not only learned so much but has also been encouraged by your teaching style and positive attitude.
We will certainly miss you after the end of the school year but look forward to seeing you around at school next year. We hope you have a wonderful, relaxing summer-you certainly deserve it, as dedicated and hard working as you are! Thank you again for being such a bright light and special teacher.
[Sender's first and last names]