There's no wrong time to write a thank-you card for a teacher, but it's customary to write a note around the holidays, at the end of the year, when they retire or during Teacher Appreciation Week.

Thank you for thinking of me on my special day. I feel lucky to have someone as thoughtful as you as a friend. I can't wait ...

“Writing a card to express your congratulations is akin to drafting a ‘thank you’ note.” Retirement card ... start of a new chapter.” As you write and share memories, “strive to ...