Question about my daughters teacher?

So my daughter came home today saying that the teacher came home and yelled at her. The reason was my daughter put a slash on the number, instead of a check like the teacher wants the cl to do. It made me really mad and I'm going in to talk to the admins at the school. We pay that teacher probably $85,000, and she is supposed to grade the papers, yet other tasks! Yet she is yelling at my daughter!! tell me your thoughts. And should I go and talk to the admins at the school?