Chill. Calm down. Relax.
If I understand you correctly, you are concerned that your daughter's teacher is including some foreign language in the curriculium, and it is not part of the (state? district?) required subject matter. Do I have this right?
You are further concerned that the teacher told you that your daughter is not a good student and that she is disruptive, even though she has been given excellent grades... and you feel that she lied to you in telling you this.
OK - one thing at a time...
In addition to your daughter getting the regular curriculium, which she is mastering well, she has been given the opportinity, while she is young and while it is easiest to learn, to begin learning another language. Most perents would consider such an opportunity a wonderful thing! Many parents pay tutors to provide language education after school.
There is nothing PC about learning other languages... There is no social aganda involved. We live on a multilingual planet and in a multilingual world. The more your daughter can speak other languages, the bigger her world will be, and the bigger her world is, the bigger her sphere of influence will be. Well educated people have been speaking more than one language since, well, since Biblical times.
You should also consider if it is possible that your daughter has picked up on some of your attitudes and is bringing them into the classroom. You strike me as an opinionated woman - nothing wrong with that, I happen to be one, too. But when and where we express our opinions makes a difference. If your daughter has heard you speak about some of your opinions about her teacher and about her education there, she may be bringing these into the classroom with her and expressing them which could be disruptive.
Even if you do not feel that she is disruptive, her teacher feels that she is. Very bright students with excellent grades can still be disruptive. I have been a school teacher and very active and on the board of my kid's Christian school. Teachers are human and you live in a small community. I'm sure that you do not want ever teacher your daughter will have to see her name on their roster and dread her arrival in their class. I know the last names of kids I did not want to see showing up in my classroom. I always tried to be professional and not hold a kid's parents against the kid... but teachers are human and they will not always do this well.
I strongly encourage you to eat crow. Go to school ASAP and apologize to this teacher for your attitude. Yes, I know she lied to you and this was wrong, but you are responsible for what you did wrong, and I have a pretty good idea that you did some things wrong. Tell her that you have not changed your thinking about the language course, but that you are very sorry for how you spoke to her and that your emotions got the better of you that day and that you would like her to forgive you.
I am willing to bet you cold hard cash that she will respond in kind. She will be gracious to you and apologize to you and the air will be cleared. Can't guarantee you that outcome, but I have seen this kind of response over and over again when we go directly to the person with whom we have had a problem - which is the Biblical method of handling conflict.
You would not be doing this for the teacher! You would be dong this becasue this is how God has told us to handle confllicts, and becasue it is the best thing for your daughter, not just this year in school, but for years to come.