Model Empathy Instead of Bashing the Teacher
While you want to let your child know that you are on “their side”, talking badly about the teacher is not a good way to do that. Help your child to understand that the teacher is just a person, with thoughts and feelings, who makes mistakes sometimes. Try to get your child to see things from the teacher’s perspective. Learning to see a different side at an early age, especially one that they disagree with, can be a very good thing.