Crybabies

There is a kid at school who cries for every. single. little. thing. She once pulled a chair out from under another kid, making him fall to the floor, and when her teacher called her out on it, she immediately started to cry. It's not a quiet-tears-fall-and-you're-done type of deal, either. She throws an all-out tantrum. She punches and kicks the walls, the desks, and cries so loudly, you can hear her in a completely different part of the school (we are on one floor of a building, so not that big of a school, but big enough).
Today, she wasn't reading the page I wanted her to read, and I just waited for her to start. I want the kids to try to sound out the words and read on their own, with help from me. I don't want to give them the word and do the work for them. I think that doesn't help them at all, so I tell them to try to read and I'll help them along. If they won't read, I won't help them. She kept saying, "I don't know, I don't know." I just kept saying, "At least try to read it, and I can help you." Five minutes later, I told her she could go to a younger class to learn to read, because I was fed up with her not even trying to read. Even her classmates, who know how she is, were trying to help her.
Well, me telling her she could go to a younger class was the last straw, and she went off. I told her if she was crying, she could go to the younger class or stop crying and stay in our class. She said she wanted to stay, and I told her she had to read if she wanted to stay. She wouldn't read. So I started to gather her things to take over to the younger class, and that was when she started her everyday crying routine. Seriously, she cries at least once a day.
Then I got mad and started mimicking her, to show her how ridiculous she looked, and her classmates started laughing at her. That did not go over well at all, and she got even louder. Finally, I told everyone to ignore her and we finished the lesson, with her crying and freaking out in the background.

The point of this whole story is this: How do you, as a parent, allow your child to be so spoiled and relentless to get their way? Obviously, she thinks this is okay, because she isn't embarrassed by it, and I don't exaggerate when I say she does this every day. I know there are some kids that are just bad, but for the most part, I believe that parents have a good part in changing bad behaviors. This kid's mom must reinforce this type of behavior. That's the only thing I can come up with. I just hope that when I do have kids, I can teach them to not be little jerks who think the world revolves around them.
Another reason why this particular kid acts this way at school is because the Korean teachers let her get away with it. When I ignored her behavior during class, she calmed down, but as soon as I went to ask her a question, she immediately started crying again. So it's obviously an attention thing. That was also why I didn't take her to one of the Korean teachers, because they usually baby her and make her think she can do this all the time. She never gets punished for anything, and then us native teachers get blamed for being the mean guys. I really don't think I was being mean in that situation, because I was showing her how stupid her behavior was, and I was letting her vent and get her aggression out before I stepped in and calmly tried to talk to her. I think that if the Korean teachers simply ignored her during her freak-outs, she would chill out and not be such a little brat. But that's not going to happen, so I'll just vent my frustrations here. It was SO annoying, and I'm glad I only have that class twice a week. Believe me, she would not be like that if I was her everyday teacher.