A heartfelt thank you note is most appreciated. Thank you for helping me with my classes.Thank you so much for your skilled teaching and patience. Write a sentence that expresses your thanks and briefly tells them why. Thank you for a wonderful semester. I appreciated your caring disposition and teaching style. Thank you for being yourself, always striving for greatness and making sure your students did as well. Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. Include specific examples of how the teacher has helped you, what you have learned from them, and any memorable moments that stand out. "Your class was the only reason I showed up most days.