Dear _________,
Thank you so much for a wonderful fifth-grade year! I know Joey can often be quite a handful, and when we decided not to medicate him for his ADHD symptoms, I was so grateful for your understanding and support. You were always so patient and kind, and all of the extra time you spent with him after school was beyond generous. You are an incredible teacher, and I have let Principal Walker know just how lucky he is to have you on his teaching staff. Thank you again for everything.
(YOUR NAME HERE)