In the movie we follow Charlie Gordon whose intelligence is at a very low level at the start. He doesn't know how to read and write. But after that he has had an operation, by two doctors he gradually gets smarter and smarter. It wasn't a permanent just a temporary operation, which only had the purpose of tripling a persons IQ. .
Charlie goes to an adult night school, were he learns how to read and write. He gets taught by a teacher named Miss Kinnian, which is a very friendly and kind person. Because of Charlie is so determined on becoming so intelligent and smart, and really is stimulated on doing something, his teacher Miss Kinnian advises and encourages him to volunteer for the operation. .
Actually it was her who recommended Charlie for this operation in the first place. And that shows that she really cares about Charlie. She deeply inside hopes that this operation might work, so that it would be a benefit to him, and ease him get through the difficulties in the world. Charlie's one and only ambition is to get smarter, so that he also can be helpful to other people. And that wish is Miss Kinnian ready to fulfill. Miss Kinnian is very sympathetic to Charlie, because after the operation she exclusively teaches him in a very special way that makes Charlie like her even more. Slowly she explains each word for word to him, and shows him how to remember a word, so that he can spell it later on. She also teaches him how to do punctuation, and they also read books together. She does all that step by step just so that his abilities get improved, and specifically that part makes her very companionable to Charlie. Because of his efforts and exertions she has a very big confidence in him, at the same she is convinced that he will succeed. Later on she tells Charlie that she really is glad and delighted that he made it so far, and to see the world in a whole new and different view. With his possibilities at this moment, she wanted him to keep on going, and exploring things that he never even knew existed.