How to send a text message to a high school teacher?

The average subject teacher follows the grades, not the students. Teachers teach and educate people. I have paid a lot, and my efforts and labor deserve respect.

You should thank the teacher, who has a very good relationship with you. You should send her a text message, which shows that you are a very sensible student. Because the teacher is very busy at work, you should write her a long thank-you letter, which she can't finish after receiving. If you express your gratitude and her help, then you can send a short message, because after a year of contact, you may get to know each other.

Therefore, I think I can send a short message and keep in touch with you often in the future.

Let's just say. Dear teacher, thank you for your concern and help over the past year. I wish you a smooth job and a happy life.