Unfortunately, I think the K you describe is very typical. I taught K for a year and was the *only teacher who refused to give the children rewards, praise them indiscriminately, and make them spend their recess time practicing walking in line.
I remember one meeting in which the principal, assistant principal, and speech therapist all tried to tell me to use rewards to shape one "problem" child's behavior. The child's mother wanted me to do the same. I refused on principle, but the mother ended up instituting her own reward system, based on my report of how the child's day had gone.
I do not think you will get anywhere trying to convince the teacher that her discipline system is inappropriate. I am sure it appears to her to "work," because rewards *do get short-term results. The teacher gets through a difficult day, and probably gets good evaluations for keeping the kids "on task." In the struggle to make it through the moment (and PS teachers do have a very difficult job), few teachers and principals think about the long-term goal of building internal motivation.
I think you might have better luck talking to your *dd about the reward system her teacher is using. Explain to her that your family does not "do" rewards: you read for the pleasure of reading, share with others because it makes both you and them feel good inside, etc. Tell your dd that her teacher may not know it, but *you know she does not need stickers to motivate her. Then leave it up to your daughter to decide whether to accept the stickers offered her. If she brings rewards home, talk to her about how they are fun but of course unnecessary. You can have similar discussions about the teacher's excessive use of praise: how silly of the teacher to think that sitting down quickly makes a person "good"! You sit down because you want to hear the story as soon as possible, not because you need the teacher to tell you how good you are. I know your dd is young, but with your help she can begin to think critically about what goes on in her classroom vs in your home.
Good luck, I fear you are only at the beginning of a long battle against this type of "behavior management."
ETA: I don't know how that "cool" smilie appeared at the top of my reply, and I couldn't figure out how to delete it!