Eric Hanushek, an economist at Stanford, estimates that the students of a very bad teacher will learn, on average, half a year’s worth of material in one school year. The students in the class of a very good teacher will learn a year and a half’s worth of material. That difference amounts to a year’s worth of learning in a single year. Teacher effects dwarf school effects: your child is actually better off in a bad school with an excellent teacher than in an excellent school with a bad teacher.

The teacher is the one who gets the most out of the lessons, and the true teacher is the learner.

impact of meeting a personality so developed can be enough to change another’s whole way of life. But in the end it is not the extraordinariness of the teacher which perplexes, intrigues, and deepens the student, it is the teacher’s utter ordinariness. Because he is just himself, he is a mirror for his students. When we are with him we feel our own strengths and shortcomings without any sense of praise or criticism from him. In his presence we see our original face, and the extraordinariness we see is only our own true nature. When we learn to let our own nature free, the boundaries between master and student disappear in a deep flow of being and joy in the unfolding of Buddha mind.

One cannot be a good teacher unless he is a good student.

The human mind is an incredible thing. It can conceive of the magnificence of the heavens and the intricacies of the basic components of matter. Yet for each mind to achieve its full potential, it needs a spark. The spark of enquiry and wonder.
Often that spark comes from a teacher. Allow me to explain. I wasn’t the easiest person to teach, I was slow to learn to read and my handwriting was untidy. But when I was fourteen my teacher at my school in St Albans, Dikran Tahta, showed me how to harness my energy and encouraged me to think creatively about mathematics. He opened my eyes to maths as the blueprint of the universe itself. If you look behind every exceptional person there is an exceptional teacher. When each of us thinks about what we can do in life, chances are we can do it because of a teacher.
[...] The basis for the future of education must lie in schools and inspiring teachers. But schools can only offer an elementary framework where sometimes rote-learning, equations and examinations can alienate children from science. Most people respond to a qualitative, rather than a quantitative, understanding, without the need for complicated equations. Popular science books and articles can also put across ideas about the way we live. However, only a small percentage of the population read even the most successful books. Science documentaries and films reach a mass audience, but it is only one-way communication.

Every person of learning is finally his own teacher; the reason of which is, that principles, being of a distinct quality to circumstances, cannot be impressed upon the memory; their place of mental residence is the understanding, and they are never so lasting as when they begin by conception.

To learn one must be humble. But life is the great teacher.

From a good teacher you may learn the secret of listening. You will never learn the secret of life. You will have to listen for yourself

Great teachers are wonderful. They change lives. We need them. The problem is that most schools don’t like great teachers. They’re organized to stamp them out, bore them, bureaucratize them, and make them average.

What is a teacher? I'll tell you: it isn't someone who teaches something, but someone who inspires the student to give of her best in order to discover what she already knows.

Better than a thousand days of diligent study is one day with a great teacher.

I liked the company of most of my colleagues, who were about equally divided among good men who were good teachers, awful men who were awful teachers, and the grotesques and misfits who drift into teaching and are so often the most educative influences a boy meets in school. If a boy can't have a good teacher, give him a psychological cripple or an exotic failure to cope with; don't just give him a bad, dull teacher.

Thus I learned from life itself. At the beginning I was only a little mass of possibilities. It was my teacher who unfolded and developed them. When she came, everything about me breathed of love and joy and was full of meaning. She has never since let pass an opportunity to point out the beauty that is in everything, nor has she ceased trying in thought and action and example to make my life sweet and useful. It was my teacher’s genius, her quick sympathy, her loving tact which made the first years of my education so beautiful. It was because she seized the right moment to impart knowledge that made it so pleasant and acceptable to me. She realized that a child’s mind is like a shallow brook which ripples and dances merrily over the stony course of its education and reflects here a flower, there a bush, yonder a fleecy cloud; and she attempted to guide my mind on its way, knowing that like a brook it should be fed by mountain streams and hidden springs, until it broadened out into a deep river, capable of reflecting in its placid surface, billowy hills, the luminous shadows of trees and the blue heavens, as well as the sweet face of a little flower. Any teacher can take a child to the classroom, but not every teacher can make him learn. He will not work joyously unless he feels that liberty is his, whether he is busy or at rest; he must feel the flush of victory and the heart-sinking of disappointment before he takes with a will the tasks distasteful to him and resolves to dance his way bravely through a dull routine of textbooks.

What I mean is that if you really want to understand something, the best way is to try and explain it to someone else. That forces you to sort it out in your own mind. And the more slow and dim-witted your pupil, the more you have to break things down into more and more simple ideas. And that’s really the essence of programming. By the time you’ve sorted out a complicated idea
into little steps that even a stupid machine can deal with, you’ve certainly learned something about it yourself. The teacher usually learns more than the pupil. Isn’t that true?