4th Grade
Her 9-year-old son had been complaining about how mean his teacher was, but she did not take it seriously. Karen had been under the impression that he was still getting used to the new school since he just transferred. After all, it is hard for young children to be in a new environment.
Another Reason
Karen was also not convinced since kids tend to call people mean when this is not really the case. A young child might feel like a teacher is being harsh when they are telling them to do their schoolwork.