Have you ever thought about how important teachers are? I think teachers do one of the most important things in the world. I believe this because education is the most important thing for humanity's progress.
In addition, teaching is difficult. Especially in high schools or primary schools because teachers have to control the class and make students be quiet. In primary or high schools there are thirty students in the classes. Try to imagine how difficult that is.
In addition, teachers have a very important responsibility to children under fifteen because they have a high influence on them. Children believe in whatever teachers say. They think teachers are wise.
By the way, their memory is unbelievable. Can you imagine how they keep all these things in their mind? For example my history teacher: he can talk about world history for weeks, I guess. It's perfect! I would really like to have a good memory like him.
Apart from these things, it's good to be friends with them. The reason is they're usually older than you and therefore have more life experience so they can give advice on your problems.
As I said, teachers have the most important job in my opinion. Remember, when you talk you are only repeating what you already know, but if you listen you may learn something new. Knowledge is power. More power to you teachers!