How can a teacher influence a child's development?

Teacher's have huge impacts on a childs live because one, they spend so much time with them. But developmently, teaching a child something will make them look at the world differently. The world will kind of make more sense to them. The child will go outside the classroom and think back to class and say "Oh, thats a bluebird." as something they learned in class. Also, being in high school I can now see that elementary school helped set down the basics of what I was soon to learn in middle and high school.