Another stressful incidence

Well, I was woken up by a scream thru my mobile last nite. It was my youngest sister freaking out and very upset with what I have done re: kids cheating in tests/exams in her summer course that she is enrolled in. In that instant, it triggered me to have a flashback (since I was asleep and have not gained consciousness) was another story, but yes, let's just go on with her story first.

My sister has been studying really hard for this course with her tutor for the past month and told me that it was not fair how more than half of the students have been cheating with our techy devices that are available (mobile/digi cam/calculator).

So I wrote an email addressed to those in authority asking for a confidential investigation and proper punishment on those kids-noting that this needs to be handled very carefully and in confidence because of my sister's privacy. I also wrote in the mail to contact me if he/she has any questions and not my sister.

Guess what?!!

Apparently, the principal came into her class, asked her to come into his room DURING the class, and then on the same day coming into the class for an emergent meeting with all the students and teacher re: cheating.

Who is stupid enough to not know it was my sister who exposed the truth?!!!!

My sister now is so very upset that she has turned the rest of students as her enermy, and feels emotionally, mentally and physically threatened by the anger by those kids who cheated.

I called the principal today asking him what he has done, and telling him that there has been many other ways he could have done differenly (instead of coming to the class immediately like an emotionally retarted child, he could have simply asked the teacher to give her a note asking her to come to his room while no one is watching).

Because of the way how the principal failed to investigate the matter in a discreet manner, it made it obvious that it was my sister who spilled the truth.

Anyway, my sister is really upset now.
I feel like an ass now causing this drama now.
But I did not want her to get bad grade while knowing she has been studying really hard, you know? Basically I had two options. Either I do not do anything about it or fight for my sister's rights.

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The principal promised me that he would talk to my sister after her last class and give me a call, but he did not. So I called him. He sounded like a useless and irresponsible ass hole.
I talked to my sister how he communicated with her when she told him how hurt she felt.
He basically told her that there was nothing he could do since the course was over.
He simply suggested her to go and talk to a counselor if any problem rises in September (physical threats and emotional abuse by the cheaters).

But what about all the emotional and verbal abuse that she already received from the cheaters in the class??

I am furious, and I want to fight for my sister and my rights and will report this case to the school disctrict hoping that some proper discipline on this ass hole will be made. It will make my day if he will get fired, but I doubt it. Sometime, I wonder how unfairly people climbed to the level of authority in any insitution/organization. I guess those who are very passionate about teaching and dealing with kids will stay forever as teachers.... Hey Tatsu, if you were reading this, please share your input on this matter. Thanks :)