I am a high school English teacher. I know how incredibly difficult the job is, and after my first year, I sat down and wrote a long letter to a teacher who inspired me. I told her about my life since I’d left her classroom, and I told her about my new job, and what things I could now appreciate about her. I never got a response, but I still feel good about doing it. I have a box (as do most teachers I’m sure) of cards, notes, drawings, and letters that I’ve received from my students over the past five years. When I feel like it’s just not worth it anymore, I look at those letters. Please do this for your teachers. You don’t know how much it really means to them.