Dear Teacher,
I wanted to take this opportunity to thank you for all your hard work and dedication throughout the year. You have been a great source of support and encouragement for me, and I appreciate all the effort you put into making our class a fun and engaging learning environment.
On this Christmas season, I wish you and your loved ones a joyous and peaceful holiday. I hope that you will have a restful break and be refreshed for the year ahead. Thank you again for all that you do for our class and our school.
Sincerely,
(your name)