I'm going to assume you are in high school. It's normal to be attracted to the opposite sex. And when you are in a class with this teacher and she's nice and happy and motivates you (and probably you are a better student as a result) you like that feeling. You feel on top of the world whenever she smiles at you and talks to you. You want to let her know that you love her. I'm sure you've heard about how people your age have strong emotions and this relates to all the hormones that are circulating in you ( sorry but it's true) So you think you are "in love" . Well you are having a normal reaction and it's hard to make good judgments when this is occupying your mind every time you see her. Hey, this feels good and you want her to have that feeling for you too. It makes sense to like her and feel happy in her class. But, and this is the hard part to hear, you aren't at the age to really understand mature love and what that involves. That is hard to accept when you have these strong feelings.
You can love her as a teacher and a human being, but you aren't in a place in your life to act on what you think is a mature love that you need to express. The way to "love" her is to be the best student that you can, and make the most of having a great teacher. She will appreciate a student who has enthusiasm in her class and wants to participate. Aside from this, you will eventually learn that there are acceptable boundaries we all have to follow to be emotionally healthy and socially accepted. Please control your urge to tell her you love her because you will feel total embarrassment, and huge awkwardness after you "relieve yourself" of this feeling. You won't be able to feel really comfortable around her again.
You can love her as a teacher and a human being, but you aren't in a place in your life to act on what you think is a mature love that you need to express. The way to "love" her is to be the best student that you can, and make the most of having a great teacher. She will appreciate a student who has enthusiasm in her class and wants to participate. Aside from this, you will eventually learn that there are acceptable boundaries we all have to follow to be emotionally healthy and socially accepted. Please control your urge to tell her you love her because you will feel total embarrassment, and huge awkwardness after you "relieve yourself" of this feeling. You won't be able to feel really comfortable around her again.