Rights of Student vs Teacher

A parent outside of our system sees the same problem.

From FindLaw.com

I have totally lost hope in the school system after this situation. If someone could steer me in the right direction it would be greatly appreciated. My daughter attended an academy where the student where use to working in groups. In the sixth grade they got rid of the program and she is back in a regular school atmosphere.
Received a phone call on Monday from a teacher saying cheating was happening. And then proceeded to tell me it was the other student's fault and never explained anything on what occurred in class.
The teacher yelled slammed the book on the desk in front of my daughter. Even though she never said who it was the children in class knew and where making ugly statements to my daughter and not the child who was at fault. It's really interesting my daughter never spoke to the other child during the test but is wrongfully accused of it?
I sent an email to the teacher asking what occurred in the class and told her my daughter has never been a problem child at school. She work's very hard to achieve her grades and never has to be told to do homework sits down and does it herself. And if they look at her school records they would know this. I asked for her grade to be reinstated due to her finishing the test before this child asked her questions.
The most interest part of the story is the child who was at fault; parent is a teacher at this school!
The teacher said she would reinstate the grade and write it up as behavior problem, which she has never once had. Then gives my daughter detention and the other child didn't get anything because her mother is a teacher there? And let's the other child retest.
This afternoon I made a phone call to the teacher and gave her another opportunity to tell me what she did in the classroom. To make her peers judge her outside of class, and point blank Asked her if she yelled at them and slammed the book on the desk? And put the fear in both of them so they where shaking. Guess what she said no!!!! I thought no way she just lied to me! Here is a teacher that is talking about ethical school rules and no cheating and she lies to me? She avoided the questions in the email and then lies on the phone about what occurred in the class! What kind of teacher would do such a thing is beyond me!
I truly believe something needs to be done about this and want to know my daughter's rights in school!