Every person we meet during our lifetime can teach us something. But let me talk about teachers who work at school.
They could be very creative or boring, young or not so young, men or women)
But I think that every teacher's purpose is to teach students how to use knowledge in life. Children must know such useful things as "why taking pills according to doctor's prescription is important" or "how to explain to a foreigner that you are lost".
Of course, we have to study English, biology, physics, Russian and so on. But is it usable in real life, that strange texts and exercises, adults?
I'm thankful for all my teachers. The knowledge I have now is their merit. I will cherish memories of the lessons, jokes, support. Sometimes, I want to get back to your lessons. Although, nothing's impossible. But new teachers, a new part of life, new stories.
I would like to see some of them, but at the moment it is impossible. So, I just can thank them.